diff --git a/src/lib/components/BaseRecipeSelector.svelte b/src/lib/components/BaseRecipeSelector.svelte
index b412ee4..60ce1f5 100644
--- a/src/lib/components/BaseRecipeSelector.svelte
+++ b/src/lib/components/BaseRecipeSelector.svelte
@@ -23,7 +23,8 @@ let options = $state({
 	includeIngredients: false,
 	includeInstructions: false,
 	showLabel: true,
-	labelOverride: ''
+	labelOverride: '',
+	baseMultiplier: 1
 });
 
 // Reset options whenever type or modal state changes
@@ -46,6 +47,7 @@ function handleInsert() {
 		selectedRecipe = null;
 		options.labelOverride = '';
 		options.showLabel = true;
+		options.baseMultiplier = 1;
 		closeModal();
 	}
 }
@@ -134,7 +136,8 @@ dialog h2 {
 }
 
 .selector-content select,
-.selector-content input[type="text"] {
+.selector-content input[type="text"],
+.selector-content input[type="number"] {
 	width: 100%;
 	padding: 0.5em 1em;
 	margin-top: 0.5em;
@@ -149,7 +152,9 @@ dialog h2 {
 .selector-content select:hover,
 .selector-content select:focus,
 .selector-content input[type="text"]:hover,
-.selector-content input[type="text"]:focus {
+.selector-content input[type="text"]:focus,
+.selector-content input[type="number"]:hover,
+.selector-content input[type="number"]:focus {
 	border-color: var(--nord9);
 	transform: scale(1.02, 1.02);
 }
@@ -245,6 +250,18 @@ dialog h2 {
 			</label>
 		{/if}
 
+		<label>
+			Mengenfaktor (Multiplikator):
+			<input
+				type="number"
+				bind:value={options.baseMultiplier}
+				min="0.1"
+				step="0.1"
+				placeholder="1"
+				onkeydown={(event) => do_on_key(event, 'Enter', false, handleInsert)}
+			/>
+		</label>
+
 		<div class="button-group">
 			<button class="button-insert" onclick={handleInsert} disabled={!selectedRecipe}>
 				Einfügen
diff --git a/src/lib/components/CreateIngredientList.svelte b/src/lib/components/CreateIngredientList.svelte
index 7526e62..a312023 100644
--- a/src/lib/components/CreateIngredientList.svelte
+++ b/src/lib/components/CreateIngredientList.svelte
@@ -128,6 +128,7 @@ function handleSelect(recipe: any, options: any) {
 		includeIngredients: options.includeIngredients,
 		showLabel: options.showLabel,
 		labelOverride: options.labelOverride || '',
+		baseMultiplier: options.baseMultiplier || 1,
 		itemsBefore: [],
 		itemsAfter: []
 	};
@@ -746,6 +747,18 @@ h3{
 				</div>
 				<div class="reference-badge">
 					📋 {t[lang].baseRecipe}: {list.name || t[lang].unnamed}
+					<div style="margin-top: 0.5em;">
+						<label style="font-size: 0.9em; display: flex; align-items: center; gap: 0.5em;">
+							{t[lang].baseMultiplier || 'Mengenfaktor'}:
+							<input
+								type="number"
+								bind:value={list.baseMultiplier}
+								min="0.1"
+								step="0.1"
+								style="width: 5em; padding: 0.25em 0.5em; border-radius: 5px; border: 1px solid var(--nord4);"
+							/>
+						</label>
+					</div>
 				</div>
 				<div class="mod_icons">
 					<button type="button" class="action_button button_subtle" onclick={() => removeReference(list_index)} aria-label={t[lang].removeReferenceAria}>
diff --git a/src/lib/components/CreateStepList.svelte b/src/lib/components/CreateStepList.svelte
index 5900f67..1a88250 100644
--- a/src/lib/components/CreateStepList.svelte
+++ b/src/lib/components/CreateStepList.svelte
@@ -125,6 +125,7 @@ function handleSelect(recipe: any, options: any) {
 		includeInstructions: options.includeInstructions,
 		showLabel: options.showLabel,
 		labelOverride: options.labelOverride || '',
+		baseMultiplier: options.baseMultiplier || 1,
 		stepsBefore: [],
 		stepsAfter: []
 	};
@@ -797,6 +798,18 @@ h3{
 				</div>
 				<div class="reference-badge">
 					📋 {t[lang].baseRecipe}: {list.name || t[lang].unnamed}
+					<div style="margin-top: 0.5em;">
+						<label style="font-size: 0.9em; display: flex; align-items: center; gap: 0.5em;">
+							{t[lang].baseMultiplier || 'Mengenfaktor'}:
+							<input
+								type="number"
+								bind:value={list.baseMultiplier}
+								min="0.1"
+								step="0.1"
+								style="width: 5em; padding: 0.25em 0.5em; border-radius: 5px; border: 1px solid var(--nord4);"
+							/>
+						</label>
+					</div>
 				</div>
 				<div class="mod_icons">
 					<button type="button" class="action_button button_subtle" onclick={() => removeReference(list_index)} aria-label={t[lang].removeReferenceAria}>
diff --git a/src/lib/components/IngredientsPage.svelte b/src/lib/components/IngredientsPage.svelte
index f658b39..113ed79 100644
--- a/src/lib/components/IngredientsPage.svelte
+++ b/src/lib/components/IngredientsPage.svelte
@@ -7,8 +7,20 @@ import HefeSwapper from './HefeSwapper.svelte';
 
 let { data } = $props();
 
+// Helper function to multiply numbers in ingredient amounts
+function multiplyIngredientAmount(amount, multiplier) {
+	if (!amount || multiplier === 1) return amount;
+	return amount.replace(/(\d+(?:[\.,]\d+)?)/g, match => {
+		const number = match.includes(',') ? match.replace(/\./g, '').replace(',', '.') : match;
+		const multiplied = (parseFloat(number) * multiplier).toString();
+		const rounded = parseFloat(multiplied).toFixed(3);
+		const trimmed = parseFloat(rounded).toString();
+		return match.includes(',') ? trimmed.replace('.', ',') : trimmed;
+	});
+}
+
 // Recursively flatten nested ingredient references
-function flattenIngredientReferences(items, lang, visited = new Set()) {
+function flattenIngredientReferences(items, lang, visited = new Set(), baseMultiplier = 1) {
 	const result = [];
 
 	for (const item of items) {
@@ -29,18 +41,22 @@ function flattenIngredientReferences(items, lang, visited = new Set()) {
 				? item.resolvedRecipe.translations.en.ingredients
 				: item.resolvedRecipe.ingredients || [];
 
-			// Recursively flatten nested references
-			const flattenedNested = flattenIngredientReferences(ingredientsToUse, lang, newVisited);
+			// Calculate combined multiplier for this reference
+			const itemBaseMultiplier = item.baseMultiplier || 1;
+			const combinedMultiplier = baseMultiplier * itemBaseMultiplier;
+
+			// Recursively flatten nested references with the combined multiplier
+			const flattenedNested = flattenIngredientReferences(ingredientsToUse, lang, newVisited, combinedMultiplier);
 
 			// Combine all items into one list
 			const combinedList = [];
 
-			// Add items before
+			// Add items before (not affected by baseMultiplier)
 			if (item.itemsBefore && item.itemsBefore.length > 0) {
 				combinedList.push(...item.itemsBefore);
 			}
 
-			// Add base recipe ingredients (now recursively flattened)
+			// Add base recipe ingredients (now recursively flattened with multiplier applied)
 			if (item.includeIngredients) {
 				flattenedNested.forEach(section => {
 					if (section.list) {
@@ -49,7 +65,7 @@ function flattenIngredientReferences(items, lang, visited = new Set()) {
 				});
 			}
 
-			// Add items after
+			// Add items after (not affected by baseMultiplier)
 			if (item.itemsAfter && item.itemsAfter.length > 0) {
 				combinedList.push(...item.itemsAfter);
 			}
@@ -69,12 +85,24 @@ function flattenIngredientReferences(items, lang, visited = new Set()) {
 					name: item.showLabel ? (item.labelOverride || baseRecipeName) : '',
 					list: combinedList,
 					isReference: item.showLabel,
-					short_name: baseRecipeShortName
+					short_name: baseRecipeShortName,
+					baseMultiplier: itemBaseMultiplier
 				});
 			}
 		} else if (item.type === 'section' || !item.type) {
-			// Regular section - pass through
-			result.push(item);
+			// Regular section - pass through with multiplier applied to amounts
+			if (baseMultiplier !== 1 && item.list) {
+				const adjustedList = item.list.map(ingredient => ({
+					...ingredient,
+					amount: multiplyIngredientAmount(ingredient.amount, baseMultiplier)
+				}));
+				result.push({
+					...item,
+					list: adjustedList
+				});
+			} else {
+				result.push(item);
+			}
 		}
 	}
 
@@ -488,7 +516,7 @@ h3 a:hover {
 {#each flattenedIngredients as list, listIndex}
 {#if list.name}
 	{#if list.isReference}
-		<h3><a href="{list.short_name}?multiplier={multiplier}">{@html list.name}</a></h3>
+		<h3><a href="{list.short_name}?multiplier={multiplier * (list.baseMultiplier || 1)}">{@html list.name}</a></h3>
 	{:else}
 		<h3>{@html list.name}</h3>
 	{/if}
diff --git a/src/lib/components/InstructionsPage.svelte b/src/lib/components/InstructionsPage.svelte
index cf08cd5..b3037b3 100644
--- a/src/lib/components/InstructionsPage.svelte
+++ b/src/lib/components/InstructionsPage.svelte
@@ -60,12 +60,15 @@ function flattenInstructionReferences(items, lang, visited = new Set()) {
 					? item.resolvedRecipe.translations.en.short_name
 					: item.resolvedRecipe.short_name;
 
+				const itemBaseMultiplier = item.baseMultiplier || 1;
+
 				result.push({
 					type: 'section',
 					name: item.showLabel ? (item.labelOverride || baseRecipeName) : '',
 					steps: combinedSteps,
 					isReference: item.showLabel,
-					short_name: baseRecipeShortName
+					short_name: baseRecipeShortName,
+					baseMultiplier: itemBaseMultiplier
 				});
 			}
 		} else if (item.type === 'section' || !item.type) {
@@ -211,7 +214,7 @@ h3 a:hover {
 {#each flattenedInstructions as list}
 {#if list.name}
 	{#if list.isReference}
-		<h3><a href="{list.short_name}?multiplier={multiplier}">{@html list.name}</a></h3>
+		<h3><a href="{list.short_name}?multiplier={multiplier * (list.baseMultiplier || 1)}">{@html list.name}</a></h3>
 	{:else}
 		<h3>{@html list.name}</h3>
 	{/if}
diff --git a/src/models/Recipe.ts b/src/models/Recipe.ts
index 0b4525d..95678b3 100644
--- a/src/models/Recipe.ts
+++ b/src/models/Recipe.ts
@@ -46,6 +46,7 @@ const RecipeSchema = new mongoose.Schema(
       includeIngredients: { type: Boolean, default: true },
       showLabel: { type: Boolean, default: true },
       labelOverride: { type: String, default: "" },
+      baseMultiplier: { type: Number, default: 1 },
       itemsBefore: [{
         name: { type: String, default: "" },
         unit: String,
@@ -70,6 +71,7 @@ const RecipeSchema = new mongoose.Schema(
        includeInstructions: { type: Boolean, default: true },
        showLabel: { type: Boolean, default: true },
        labelOverride: { type: String, default: "" },
+       baseMultiplier: { type: Number, default: 1 },
        stepsBefore: [String],
        stepsAfter: [String],
      }],
@@ -115,6 +117,7 @@ const RecipeSchema = new mongoose.Schema(
            includeIngredients: { type: Boolean, default: true },
            showLabel: { type: Boolean, default: true },
            labelOverride: { type: String, default: "" },
+           baseMultiplier: { type: Number, default: 1 },
            itemsBefore: [{
              name: { type: String, default: "" },
              unit: String,
@@ -134,6 +137,7 @@ const RecipeSchema = new mongoose.Schema(
            includeInstructions: { type: Boolean, default: true },
            showLabel: { type: Boolean, default: true },
            labelOverride: { type: String, default: "" },
+           baseMultiplier: { type: Number, default: 1 },
            stepsBefore: [String],
            stepsAfter: [String],
          }],
diff --git a/src/types/types.ts b/src/types/types.ts
index e50b478..19c9726 100644
--- a/src/types/types.ts
+++ b/src/types/types.ts
@@ -25,6 +25,7 @@ export type IngredientReference = {
   includeIngredients: boolean;
   showLabel: boolean;
   labelOverride?: string;
+  baseMultiplier?: number;
   itemsBefore?: [{
     name: string;
     unit: string;
@@ -61,6 +62,7 @@ export type InstructionReference = {
   includeInstructions: boolean;
   showLabel: boolean;
   labelOverride?: string;
+  baseMultiplier?: number;
   stepsBefore?: [string];
   stepsAfter?: [string];
   // Populated after server-side resolution