diff --git a/src/plugins/pricelist/components/CalculationTable.vue b/src/plugins/pricelist/components/CalculationTable.vue
index 224c275..854f22b 100644
--- a/src/plugins/pricelist/components/CalculationTable.vue
+++ b/src/plugins/pricelist/components/CalculationTable.vue
@@ -371,8 +371,13 @@
               props.row.uuid ? `/api/pricelist/picture/${props.row.uuid}?size=256` : 'no-image.svg'
             "
           >
-            <div class='absolute-top-right justify-end' style='background-color: transparent;'>
-              <q-btn @click="console.log('hallo')" round icon='mdi-pencil' style='background-color: rgba(0,0,0,0.5)'/>
+            <div class="absolute-top-right justify-end" style="background-color: transparent">
+              <q-btn
+                round
+                icon="mdi-pencil"
+                style="background-color: rgba(0, 0, 0, 0.5)"
+                @click="editDrink = props.row"
+              />
             </div>
             <div class="absolute-bottom-right justify-end">
               <div class="text-subtitle1 text-right">
@@ -447,14 +452,20 @@
               />
             </div>
           </q-card-section>
-
           <q-card-section v-if="props.row.volumes.length > 0">
-            <drink-price-volumes :props="props.row" />
+            <drink-price-volumes v-model="props.row.volumes" />
           </q-card-section>
         </q-card>
       </div>
     </template>
   </q-table>
+  <q-dialog :model-value="editDrink !== undefined" persistent>
+    <drink-modify
+      :drink="editDrink"
+      @save="editDrink = undefined"
+      @cancel="editDrink = undefined"
+    />
+  </q-dialog>
 </template>
 
 <script lang="ts">
@@ -467,6 +478,7 @@ import NewDrink from 'src/plugins/pricelist/components/CalculationTable/NewDrink
 import BuildManual from 'src/plugins/pricelist/components/CalculationTable/BuildManual.vue';
 import SearchInput from './SearchInput.vue';
 import DrinkPriceVolumes from 'src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumes.vue';
+import DrinkModify from './DrinkModify.vue';
 import { filter, Search } from '../utils/filter';
 import { Notify } from 'quasar';
 import { sort } from '../utils/sort';
@@ -480,6 +492,7 @@ export default defineComponent({
     BuildManual,
     DrinkPriceVolumesTable,
     DrinkPriceVolumes,
+    DrinkModify,
   },
   setup() {
     const mainStore = useMainStore();
@@ -715,6 +728,7 @@ export default defineComponent({
       label: '',
     });
     const grid = ref(true);
+    const editDrink = ref();
     return {
       drinks: computed(() => store.drinks),
       pagination,
@@ -737,6 +751,7 @@ export default defineComponent({
       search_keys,
       grid,
       tags: computed(() => store.tags),
+      editDrink,
     };
   },
 });
diff --git a/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumeTable/NewVolume.vue b/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumeTable/NewVolume.vue
index 9669361..9ed381d 100644
--- a/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumeTable/NewVolume.vue
+++ b/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumeTable/NewVolume.vue
@@ -37,7 +37,7 @@ export default defineComponent({
     const emptyVolume: DrinkPriceVolume = {
       id: -1,
       _volume: 0,
-      min_prices: [{ percentage: 100 }, { percentage: 250 }, { percentage: 300 }],
+      min_prices: [],
       prices: [],
       ingredients: [],
     };
diff --git a/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumes.vue b/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumes.vue
index be0142e..55ce71c 100644
--- a/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumes.vue
+++ b/src/plugins/pricelist/components/CalculationTable/DrinkPriceVolumes.vue
@@ -9,17 +9,20 @@
     navigation
     arrows
   >
-    <q-carousel-slide v-for="volume in props.volumes" :key="volume.id" :name="volume.id">
+    <q-carousel-slide v-for="volume in volumes" :key="volume.id" :name="volume.id">
       <q-input
+        v-model.number="volume.volume"
         class="q-pa-sm"
-        :model-value="volume.volume"
-        outlined
-        readonly
+        :outlined="!editable"
+        :filled="editable"
+        :readonly="!editable"
         dense
         label="Inhalt"
         mask="#.###"
         fill-mask="0"
         suffix="L"
+        min="0"
+        step="0.001"
       />
       <div class="full-width row q-gutter-sm q-pa-sm justify-around">
         <div v-for="(min_price, index) in volume.min_prices" :key="index">
@@ -30,58 +33,104 @@
       <div class="q-pa-sm">
         <div v-for="(price, index) in volume.prices" :key="price.id">
           <div class="fit row justify-around q-py-sm">
-            <div class="text-body1 col-xs-12 col-md-4">{{ price.price.toFixed(2) }}€</div>
-            <div class="text-body1 col-xs-12 col-md-4">
+            <div v-if="!editable" class="text-body1 col-xs-12 col-md-3">
+              {{ price.price.toFixed(2) }}€
+            </div>
+            <q-input
+              v-else
+              v-model.number="price.price"
+              class="col-xs-12 col-md-3"
+              type="number"
+              min="0"
+              step="0.01"
+              suffix="€"
+              filled
+              dense
+              label="Preis"
+            />
+            <div class="text-body1 col-xs-12 col-md-2">
               <q-toggle
-                :model-value="price.public"
-                disable
+                v-model="price.public"
+                :disable="!editable"
                 checked-icon="mdi-earth"
                 unchecked-icon="mdi-earth-off"
               />
             </div>
-            <div class="text-body1 col-xs-12 col-md-4">
+            <div v-if="!editable" class="text-body1 col-xs-12 col-md-5">
               {{ price.description }}
             </div>
+            <q-input
+              v-else
+              v-model="price.description"
+              class="col-xs-12 col-md-5"
+              filled
+              dense
+              label="Beschreibung"
+            />
           </div>
           <q-separator v-if="index < volume.prices.length - 1" />
         </div>
       </div>
       <div class="q-pa-sm">
-        <ingredients :ingredients="volume.ingredients" :volume="volume" />
+        <ingredients v-model="volume.ingredients" :editable="editable" />
       </div>
     </q-carousel-slide>
   </q-carousel>
+  <q-btn-toggle v-model="volume" :options="options" />
 </template>
 
 <script lang="ts">
-import { computed, defineComponent, PropType, ref } from 'vue';
-import { Drink } from 'src/plugins/pricelist/store';
+import { computed, defineComponent, PropType, ref, onBeforeMount } from 'vue';
+import { DrinkPriceVolume } from 'src/plugins/pricelist/store';
 import Ingredients from 'src/plugins/pricelist/components/CalculationTable/Ingredients.vue';
 
 export default defineComponent({
   name: 'DrinkPriceVolume',
   components: { Ingredients },
   props: {
-    props: {
-      type: Object as PropType<Drink>,
+    modelValue: {
+      type: Array as PropType<Array<DrinkPriceVolume>>,
       required: true,
     },
+    editable: {
+      type: Boolean,
+      default: false,
+    },
   },
-  setup(props) {
-    const _volume = ref<number|undefined>();
-    const volume = computed<number|undefined>({
+  emits: {
+    'update:modelValue': (val: Array<DrinkPriceVolume>) => val,
+  },
+  setup(props, { emit }) {
+    onBeforeMount(() => {
+      volumes.value = <Array<DrinkPriceVolume>>[...props.modelValue];
+    });
+    const volumes = ref<Array<DrinkPriceVolume>>([]);
+    const _volume = ref<number | undefined>();
+    const volume = computed<number | undefined>({
       get: () => {
         if (_volume.value !== undefined) {
           return _volume.value;
         }
-        if (props.props.volumes.length > 0) {
-          return props.props.volumes[0].id;
+        if (volumes.value.length > 0) {
+          return volumes.value[0].id;
         }
         return undefined;
       },
-      set: (val: number|undefined) => (_volume.value = val),
+      set: (val: number | undefined) => (_volume.value = val),
     });
-    return { volume };
+    const options = computed<Array<{ label: string; value: number }>>(() => {
+      const retVal: Array<{ label: string; value: number }> = [];
+      volumes.value.forEach((volume: DrinkPriceVolume) => {
+        retVal.push({ label: `${<number>volume.volume}L`, value: volume.id });
+      });
+      return retVal;
+    });
+
+    function updateVolume() {
+      emit('update:modelValue', volumes.value);
+    }
+
+    return { volumes, volume, options, updateVolume };
   },
 });
 </script>
diff --git a/src/plugins/pricelist/components/CalculationTable/Ingredients.vue b/src/plugins/pricelist/components/CalculationTable/Ingredients.vue
index c829e4c..9a308ca 100644
--- a/src/plugins/pricelist/components/CalculationTable/Ingredients.vue
+++ b/src/plugins/pricelist/components/CalculationTable/Ingredients.vue
@@ -1,8 +1,8 @@
 <template>
   <div class="full-width">
     <div
-      v-for="ingredient in ingredients"
-      :key="`volume:${volume.id},ingredient:${ingredient.id}`"
+      v-for="ingredient in edit_ingredients"
+      :key="`ingredient:${ingredient.id}`"
       class="full-width row justify-evenly q-py-xs"
     >
       <div class="full-width row justify-evenly">
@@ -11,14 +11,16 @@
             <div class="col">
               {{ get_drink_ingredient_name(ingredient.drink_ingredient.ingredient_id) }}
               <q-popup-edit
+                v-if="editable"
+                v-slot="scope"
                 v-model="ingredient.drink_ingredient.ingredient_id"
                 buttons
                 label-cancel="Abbrechen"
                 label-set="Speichern"
-                @save="updateDrink"
+                @save="updateValue"
               >
                 <q-select
-                  v-model="ingredient.drink_ingredient.ingredient_id"
+                  v-model="scope.ingredient_id"
                   class="col q-px-sm"
                   label="Getränk"
                   filled
@@ -34,14 +36,16 @@
             <div class="col">
               {{ ingredient.drink_ingredient.volume.toFixed(3) }}L
               <q-popup-edit
+                v-if="editable"
+                v-slot="scope"
                 v-model="ingredient.drink_ingredient.volume"
                 buttons
                 label-cancel="Abbrechen"
                 label-set="Speichern"
-                @save="updateDrink"
+                @save="updateValue"
               >
                 <q-input
-                  v-model.number="ingredient.drink_ingredient.volume"
+                  v-model.number="scope.value"
                   class="col q-px-sm"
                   label="Volume"
                   type="number"
@@ -63,11 +67,12 @@
             <div class="col">{{ ingredient.extra_ingredient.price.toFixed(3) }}€</div>
           </div>
           <q-popup-edit
+            v-if="editable"
             v-model="ingredient.extra_ingredient"
             buttons
             label-cancel="Abbrechen"
             label-set="Speichern"
-            @save="updateDrink"
+            @save="updateValue"
           >
             <q-select
               v-model="ingredient.extra_ingredient"
@@ -78,19 +83,19 @@
             />
           </q-popup-edit>
         </div>
-        <div class="col-1 row justify-end q-pa-xs">
+        <div v-if="editable" class="col-1 row justify-end q-pa-xs">
           <q-btn
             icon="mdi-delete"
             round
             size="xs"
             color="negative"
-            @click="deleteIngredient(ingredient, volume)"
+            @click="deleteIngredient(ingredient)"
           />
         </div>
       </div>
       <q-separator />
     </div>
-    <div class="full-width row justify-end q-py-xs">
+    <div v-if="editable" class="full-width row justify-end q-py-xs">
       <q-btn size="sm" icon-right="mdi-plus" color="positive" label="Zutat hinzufügen">
         <q-menu anchor="center middle" self="center middle">
           <div class="full-width row justify-around q-gutter-sm q-pa-sm">
@@ -133,12 +138,7 @@
           </div>
           <div class="full-width row jusitfy-between q-gutter-sm q-pa-sm">
             <q-btn v-close-popup label="Abbrechen" @click="cancelAddIngredient" />
-            <q-btn
-              v-close-popup
-              label="Speichern"
-              color="positive"
-              @click="addIngredient(volume)"
-            />
+            <q-btn v-close-popup label="Speichern" color="positive" @click="addIngredient" />
           </div>
         </q-menu>
       </q-btn>
@@ -147,34 +147,39 @@
 </template>
 
 <script lang="ts">
-import { computed, defineComponent, PropType, ref } from 'vue';
-import { DrinkPriceVolume, usePricelistStore } from '../../store';
+import { computed, defineComponent, PropType, ref, onBeforeMount } from 'vue';
+import { usePricelistStore } from '../../store';
 
 export default defineComponent({
   name: 'Ingredients',
   props: {
-    ingredients: {
-      type: Array as PropType<FG.Ingredient[]>,
+    modelValue: {
+      type: Object as PropType<Array<FG.Ingredient>>,
       required: true,
     },
-    volume: {
-      type: Object /*as PropType<DrinkPriceVolume>*/,
-      required: true,
+    editable: {
+      type: Boolean,
+      default: false,
     },
   },
   emits: {
-    updateDrink: () => true,
-    addIngredient: (val: FG.Ingredient, volume: DrinkPriceVolume) =>
-      (val.drink_ingredient || val.extra_ingredient) && volume,
-    deleteIngredient: (ingredient: FG.Ingredient, volume: DrinkPriceVolume) =>
-      (ingredient.drink_ingredient || ingredient.extra_ingredient) && volume,
+    'update:modelValue': (val: Array<FG.Ingredient>) => val,
   },
-  setup(_, { emit }) {
+  setup(props, { emit }) {
+    onBeforeMount(() => {
+      edit_ingredients.value = [];
+      props.modelValue.forEach((a) => {
+        edit_ingredients.value.push(Object.assign({}, a));
+      });
+      console.log(edit_ingredients);
+    });
+
     const store = usePricelistStore();
 
+    const edit_ingredients = ref<Array<FG.Ingredient>>([]);
     const newIngredient = ref<FG.Drink | FG.ExtraIngredient>();
     const newIngredientVolume = ref<number>(0);
-    function addIngredient(volume: DrinkPriceVolume) {
+    function addIngredient() {
       let _ingredient: FG.Ingredient;
       if ((<FG.Drink>newIngredient.value)?.volume && newIngredient.value) {
         _ingredient = {
@@ -193,20 +198,27 @@ export default defineComponent({
           extra_ingredient: <FG.ExtraIngredient>newIngredient.value,
         };
       }
-      emit('addIngredient', _ingredient, volume);
+      edit_ingredients.value.push(_ingredient);
+      emit('update:modelValue', edit_ingredients.value);
       cancelAddIngredient();
     }
-    function updateDrink() {
-      console.log('updateDrink from Ingredients');
-      emit('updateDrink');
+
+    function updateValue(value: number, initValue: number) {
+      console.log('updateValue', value, initValue);
+      emit('update:modelValue', edit_ingredients.value);
     }
+
     function cancelAddIngredient() {
       setTimeout(() => {
         (newIngredient.value = undefined), (newIngredientVolume.value = 0);
       }, 200);
     }
-    function deleteIngredient(ingredient: FG.Ingredient, volume: DrinkPriceVolume) {
-      emit('deleteIngredient', ingredient, volume);
+    function deleteIngredient(ingredient: FG.Ingredient) {
+      const index = edit_ingredients.value.findIndex((a) => a.id === ingredient.id);
+      if (index > -1) {
+        edit_ingredients.value.splice(index, 1);
+      }
+      emit('update:modelValue', edit_ingredients.value);
     }
     const drinks = computed(() =>
       store.drinks.filter((drink) => {
@@ -227,9 +239,10 @@ export default defineComponent({
       newIngredient,
       newIngredientVolume,
       cancelAddIngredient,
-      updateDrink,
+      updateValue,
       deleteIngredient,
       get_drink_ingredient_name,
+      edit_ingredients,
     };
   },
 });
diff --git a/src/plugins/pricelist/components/DrinkModify.vue b/src/plugins/pricelist/components/DrinkModify.vue
new file mode 100644
index 0000000..30da593
--- /dev/null
+++ b/src/plugins/pricelist/components/DrinkModify.vue
@@ -0,0 +1,94 @@
+<template>
+  <q-card>
+    <q-card-section>
+      <div class="text-h6">Getränk Bearbeiten</div>
+    </q-card-section>
+    <q-card-section>
+      <div class="fit row">
+        <q-input
+          v-model="edit_drink.article_id"
+          class="col-xs-12 col-sm-6 q-pa-sm"
+          filled
+          label="Artikelnummer"
+          dense
+        />
+        <q-input
+          v-model="edit_drink.volume"
+          class="col-xs-12 col-sm-6 q-pa-sm"
+          filled
+          label="Inhalt"
+          dense
+          suffix="L"
+        />
+        <q-input
+          v-model="edit_drink.package_size"
+          class="col-xs-12 col-sm-6 q-pa-sm"
+          filled
+          label="Gebindegröße"
+          dense
+        />
+        <q-input
+          v-model="edit_drink.cost_per_package"
+          class="col-xs-12 col-sm-6 q-pa-sm"
+          filled
+          label="Preis Gebinde"
+          suffix="€"
+          dense
+        />
+        <q-input
+          v-model="edit_drink.cost_per_volume"
+          class="col-xs-12 col-sm-6 q-pa-sm q-pb-lg"
+          filled
+          label="Preis pro L"
+          hint="Inkl. 19% Mehrwertsteuer"
+          suffix="€"
+          dense
+        />
+      </div>
+    </q-card-section>
+    <q-card-section>
+      <drink-price-volumes v-model="edit_drink.volumes" editable />
+    </q-card-section>
+    <q-card-actions class="justify-around">
+      <q-btn label="Abbrechen" @click="cancel" />
+      <q-btn label="Speichern" color="primary" @click="save" />
+    </q-card-actions>
+  </q-card>
+</template>
+<script lang="ts">
+import { defineComponent, PropType, ref, onBeforeMount } from 'vue';
+import { Drink, DrinkPriceVolume } from '../store';
+import DrinkPriceVolumes from './CalculationTable/DrinkPriceVolumes.vue';
+import { calc_volume } from 'src/plugins/pricelist/utils/utils';
+export default defineComponent({
+  name: 'DrinkModify',
+  components: { DrinkPriceVolumes },
+  props: {
+    drink: {
+      type: Object as PropType<Drink>,
+      required: true,
+    },
+  },
+  emits: { save: () => true, cancel: () => true },
+  setup(props, { emit }) {
+    onBeforeMount(() => {
+      edit_drink.value = Object.assign({}, props.drink);
+    });
+
+    const edit_drink = ref<Drink>();
+    function save() {
+      emit('save');
+    }
+    function cancel() {
+      emit('cancel');
+    }
+    function updateVolume(volume: DrinkPriceVolume) {
+      if (volume) {
+        console.log('edit_volume', volume);
+        volume.volume = calc_volume(volume);
+      }
+    }
+    return { edit_drink, save, cancel, updateVolume };
+  },
+});
+</script>
diff --git a/src/plugins/pricelist/pages/CocktailBuilder.vue b/src/plugins/pricelist/pages/CocktailBuilder.vue
index addffcf..eb572e7 100644
--- a/src/plugins/pricelist/pages/CocktailBuilder.vue
+++ b/src/plugins/pricelist/pages/CocktailBuilder.vue
@@ -27,7 +27,7 @@
 </template>
 
 <script lang="ts">
-import { computed, defineComponent, onBeforeMount, ref } from 'vue';
+import { defineComponent, onBeforeMount, ref } from 'vue';
 import Ingredients from 'src/plugins/pricelist/components/CalculationTable/Ingredients.vue';
 import { DrinkPriceVolume, usePricelistStore } from 'src/plugins/pricelist/store';
 export default defineComponent({
@@ -39,7 +39,7 @@ export default defineComponent({
         store.min_prices.forEach((min_price) => {
           (<DrinkPriceVolume>volume.value).min_prices.push({
             percentage: min_price,
-            price: computed<number>(() => {
+            price: /*computed<number>(() => {
               let retVal = 0;
               let extraIngredientPrice = 0;
               volume.value.ingredients.forEach((ingredient) => {
@@ -55,7 +55,7 @@ export default defineComponent({
                 }
               });
               return (retVal * min_price) / 100 + extraIngredientPrice;
-            }),
+            }) */ 0,
           });
         });
       });
diff --git a/src/plugins/pricelist/store.ts b/src/plugins/pricelist/store.ts
index 539ef0d..28dde0b 100644
--- a/src/plugins/pricelist/store.ts
+++ b/src/plugins/pricelist/store.ts
@@ -1,21 +1,20 @@
 import { api } from 'src/boot/axios';
 import { defineStore } from 'pinia';
 import { AxiosResponse } from 'axios';
-import { computed, ComputedRef, WritableComputedRef } from 'vue';
+import {
+  calc_volume,
+  calc_cost_per_volume,
+  calc_all_min_prices,
+} from 'src/plugins/pricelist/utils/utils';
 
-interface MinPrice extends Omit<FG.MinPrices, 'price'> {
-  price?: WritableComputedRef<number>;
-}
-
-interface DrinkPriceVolume extends Omit<Omit<FG.DrinkPriceVolume, 'volume'>, 'min_prices'> {
+interface DrinkPriceVolume extends Omit<FG.DrinkPriceVolume, 'volume'> {
   _volume: number;
-  volume?: WritableComputedRef<number>;
-  min_prices: MinPrice[];
+  volume?: number;
 }
 
 interface Drink extends Omit<Omit<FG.Drink, 'cost_per_volume'>, 'volumes'> {
   volumes: DrinkPriceVolume[];
-  cost_per_volume: WritableComputedRef<number | undefined>;
+  cost_per_volume?: number;
   _cost_per_volume?: number;
 }
 
@@ -26,23 +25,7 @@ class DrinkPriceVolume implements DrinkPriceVolume {
     this.prices = prices;
     this.ingredients = ingredients;
     this.min_prices = [];
-    this.volume = computed<number>({
-      get: () => {
-        if (this.ingredients.some((ingredient) => !!ingredient.drink_ingredient)) {
-          let retVal = 0;
-          this.ingredients.forEach((ingredient) => {
-            if (ingredient.drink_ingredient?.volume) {
-              retVal += ingredient.drink_ingredient.volume;
-            }
-          });
-          this._volume = retVal;
-          return retVal;
-        } else {
-          return this._volume;
-        }
-      },
-      set: (val) => (this._volume = val),
-    });
+    this.volume = calc_volume(this);
   }
 }
 
@@ -67,18 +50,7 @@ class Drink {
     this.volume = volume;
     this.cost_per_package = cost_per_package;
     this._cost_per_volume = cost_per_volume;
-    this.cost_per_volume = computed({
-      get: () => {
-        if (!!this.volume && !!this.package_size && !!this.cost_per_package) {
-          const retVal =
-            ((this.cost_per_package || 0) / ((this.volume || 0) * (this.package_size || 0))) * 1.19;
-          this._cost_per_volume = Math.round(retVal * 1000) / 1000;
-        }
-
-        return this._cost_per_volume;
-      },
-      set: (val) => (this._cost_per_volume = val),
-    });
+    this.cost_per_volume = calc_cost_per_volume(this);
     this.tags = tags;
     this.type = type;
     this.volumes = [];
@@ -164,7 +136,7 @@ export const usePricelistStore = defineStore({
         });
         this.drinks.push(_drink);
       });
-      this.create_min_prices();
+      calc_all_min_prices(this.drinks, this.min_prices);
       console.log(this.drinks);
     },
     sortPrices(volume: DrinkPriceVolume) {
@@ -217,7 +189,7 @@ export const usePricelistStore = defineStore({
         _drink.volumes.push(_volume);
       });
       this.drinks.push(_drink);
-      this.create_min_prices();
+      calc_all_min_prices(this.drinks, this.min_prices);
     },
     async updateDrink(drink: Drink) {
       console.log(drink);
@@ -234,7 +206,7 @@ export const usePricelistStore = defineStore({
         });
         this.drinks[index] = _drink;
       }
-      this.create_min_prices();
+      calc_all_min_prices(this.drinks, this.min_prices);
     },
     deleteDrink(drink: Drink) {
       api
@@ -271,46 +243,7 @@ export const usePricelistStore = defineStore({
     },
     async set_min_prices() {
       await api.post<Array<number>>('pricelist/settings/min_prices', this.min_prices);
-      this.create_min_prices();
-    },
-    create_min_prices() {
-      this.drinks.forEach((drink) => {
-        drink.volumes.forEach((volume) => {
-          volume.min_prices = [];
-          this.min_prices.forEach((min_price) => {
-            let computedMinPrice: ComputedRef;
-            if (drink.cost_per_volume) {
-              computedMinPrice = computed<number>(
-                () =>
-                  (<number>(<unknown>drink.cost_per_volume) *
-                    <number>(<unknown>volume.volume) *
-                    min_price) /
-                  100
-              );
-            } else {
-              computedMinPrice = computed<number>(() => {
-                let retVal = 0;
-                let extraIngredientPrice = 0;
-                volume.ingredients.forEach((ingredient) => {
-                  if (ingredient.drink_ingredient) {
-                    const _drink = usePricelistStore().drinks.find(
-                      (a) => a.id === ingredient.drink_ingredient?.ingredient_id
-                    );
-                    retVal +=
-                      ingredient.drink_ingredient.volume *
-                      <number>(<unknown>_drink?.cost_per_volume);
-                  }
-                  if (ingredient.extra_ingredient) {
-                    extraIngredientPrice += ingredient.extra_ingredient.price;
-                  }
-                });
-                return (retVal * min_price) / 100 + extraIngredientPrice;
-              });
-            }
-            volume.min_prices.push({ percentage: min_price, price: computedMinPrice });
-          });
-        });
-      });
+      calc_all_min_prices(this.drinks, this.min_prices);
     },
     async upload_drink_picture(drink: Drink, file: File) {
       const formData = new FormData();
@@ -351,4 +284,4 @@ export const usePricelistStore = defineStore({
   },
 });
 
-export { DrinkPriceVolume, MinPrice, Drink };
+export { DrinkPriceVolume, Drink };
diff --git a/src/plugins/pricelist/utils/utils.ts b/src/plugins/pricelist/utils/utils.ts
new file mode 100644
index 0000000..fe6dcef
--- /dev/null
+++ b/src/plugins/pricelist/utils/utils.ts
@@ -0,0 +1,71 @@
+import { Drink, DrinkPriceVolume, usePricelistStore } from 'src/plugins/pricelist/store';
+
+function calc_volume(volume: DrinkPriceVolume) {
+  if (volume.ingredients.some((ingredient) => !!ingredient.drink_ingredient)) {
+    let retVal = 0;
+    volume.ingredients.forEach((ingredient) => {
+      if (ingredient.drink_ingredient?.volume) {
+        retVal += ingredient.drink_ingredient.volume;
+      }
+    });
+    return retVal;
+  } else {
+    return volume._volume;
+  }
+}
+
+function calc_cost_per_volume(drink: Drink) {
+  let retVal = drink._cost_per_volume;
+  if (!!drink.volume && !!drink.package_size && !!drink.cost_per_package) {
+    retVal =
+      ((drink.cost_per_package || 0) / ((drink.volume || 0) * (drink.package_size || 0))) * 1.19;
+  }
+
+  return retVal ? Math.round(retVal * 1000) / 1000 : retVal;
+}
+
+function calc_all_min_prices(drinks: Array<Drink>, min_prices: Array<number>) {
+  drinks.forEach((drink) => {
+    drink.volumes.forEach((volume) => {
+      volume.min_prices = calc_min_prices(volume, drink.cost_per_volume, min_prices);
+    });
+  });
+}
+
+function helper(volume: DrinkPriceVolume, min_price: number) {
+  let retVal = 0;
+  let extraIngredientPrice = 0;
+  volume.ingredients.forEach((ingredient) => {
+    if (ingredient.drink_ingredient) {
+      const _drink = usePricelistStore().drinks.find(
+        (a) => a.id === ingredient.drink_ingredient?.ingredient_id
+      );
+      retVal += ingredient.drink_ingredient.volume * <number>(<unknown>_drink?.cost_per_volume);
+    }
+    if (ingredient.extra_ingredient) {
+      extraIngredientPrice += ingredient.extra_ingredient.price;
+    }
+  });
+  return (retVal * min_price) / 100 + extraIngredientPrice;
+}
+
+function calc_min_prices(
+  volume: DrinkPriceVolume,
+  cost_per_volume: number | undefined,
+  min_prices: Array<number>
+) {
+  const retVal: Array<FG.MinPrices> = [];
+  volume.min_prices = [];
+  min_prices.forEach((min_price) => {
+    let computedMinPrice: number;
+    if (cost_per_volume) {
+      computedMinPrice = (cost_per_volume * <number>volume.volume * min_price) / 100;
+    } else {
+      computedMinPrice = helper(volume, min_price);
+    }
+    retVal.push({ percentage: min_price, price: computedMinPrice });
+  });
+  return retVal;
+}
+
+export { calc_volume, calc_cost_per_volume, calc_all_min_prices, calc_min_prices };