diff --git a/app/Http/Controllers/Admin/Inventory/RawMaterialStockController.php b/app/Http/Controllers/Admin/Inventory/RawMaterialStockController.php
index 6d9ab50..c4d6a56 100644
--- a/app/Http/Controllers/Admin/Inventory/RawMaterialStockController.php
+++ b/app/Http/Controllers/Admin/Inventory/RawMaterialStockController.php
@@ -5,9 +5,12 @@ namespace App\Http\Controllers\Admin\Inventory;
 use App\Http\Controllers\Controller;
 use App\Models\Ingredient;
 use App\Models\Location;
+use App\Models\Product;
+use App\Models\ProductIngredient;
 use App\Models\TaxRate;
 use App\Repositories\StockEntryRepository;
 use App\Services\InventoryService;
+use App\Services\ProductionService;
 use App\Services\ProductStockService;
 use Illuminate\Http\Request;
 use Illuminate\View\View;
@@ -18,6 +21,7 @@ class RawMaterialStockController extends Controller
         protected InventoryService $inventoryService,
         protected ProductStockService $productStockService,
         protected StockEntryRepository $stockEntryRepository,
+        protected ProductionService $productionService,
     ) {}
 
     public function index(Request $request): View
@@ -90,11 +94,12 @@ class RawMaterialStockController extends Controller
             'products' => fn ($q) => $q->where('active', true)->where('production_relevant', true),
         ]);
 
-        // AP-37: Jedes Produkt hat i. d. R. zwei product_ingredients-Zeilen
-        // (recipe_type „manufacturer" + „product"), wodurch die belongsToMany-
-        // Relation dasselbe Produkt doppelt liefert. Für die „Enthalten in"-Anzeige
-        // (und den darauf basierenden Produktbestand) nach Produkt-ID deduplizieren.
-        $ingredient->setRelation('products', $ingredient->products->unique('id')->values());
+        // AP-37/Prüfung 08.09.2026 F-14: „Enthalten in" aus der Hersteller-Rezeptur —
+        // alle Zeilen (Phasen) je Produkt summieren; Anteil (%) und Verbrauch je Stück
+        // (Anteil × Füllgewicht-Skala × Faktor, wie in der Produktion) statt roher Pivot-Wert.
+        $recipeUsage = $this->recipeUsageByProduct($ingredient);
+        $ingredient->setRelation('products', $ingredient->products->unique('id')
+            ->filter(fn (Product $p) => isset($recipeUsage[$p->id]))->values());
 
         // AP-27: Chargen je batch_number zusammengeführt (jeder Einkauf bleibt eigener stock_entry).
         $chargeGroups = $this->inventoryService->chargeGroupsForIngredient($ingredient->id);
@@ -133,10 +138,45 @@ class RawMaterialStockController extends Controller
             'expectedEmpty' => $this->inventoryService->expectedEmptyDate($remaining, $daily),
             'status' => $this->inventoryService->stockStatus($minAlert, $remaining, $daily, $leadDays, $openTotal > 0),
             'lastPriceBySupplier' => $lastPriceBySupplier,
+            'recipeUsage' => $recipeUsage,
             'taxRates' => TaxRate::query()->active()->orderBy('pos')->orderBy('name')->get(),
         ]);
     }
 
+    /**
+     * F-14: Anteil und Verbrauch je Stück aus der Hersteller-Rezeptur je Produkt
+     * (nur aktive, produktionsrelevante Produkte — AP-47).
+     *
+     * @return array<int, array{percent: float, grams_per_piece: ?float, consumption_per_piece: ?float}>
+     */
+    private function recipeUsageByProduct(Ingredient $ingredient): array
+    {
+        $rows = ProductIngredient::query()
+            ->with('product')
+            ->where('ingredient_id', $ingredient->id)
+            ->where('recipe_type', 'manufacturer')
+            ->get()
+            ->filter(fn (ProductIngredient $row) => $row->product !== null
+                && (bool) $row->product->active && (bool) $row->product->production_relevant);
+
+        $usage = [];
+        foreach ($rows->groupBy('product_id') as $productId => $productRows) {
+            $product = $productRows->first()->product;
+            $percent = (float) $productRows->sum(fn (ProductIngredient $r) => (float) ($r->gram ?? 0));
+            $withFactor = (float) $productRows->sum(fn (ProductIngredient $r) => (float) ($r->gram ?? 0) * (float) ($r->factor ?? 1.1));
+            $scale = $this->productionService->recipeGramScale($product);
+            $hasMassBasis = $this->productionService->hasMassBasis($product);
+
+            $usage[(int) $productId] = [
+                'percent' => round($percent, 3),
+                'grams_per_piece' => $hasMassBasis ? round($percent * $scale, 2) : null,
+                'consumption_per_piece' => $hasMassBasis ? round($withFactor * $scale, 2) : null,
+            ];
+        }
+
+        return $usage;
+    }
+
     /**
      * @return array<int, string> [days => label]
      */
diff --git a/app/Services/ProductionService.php b/app/Services/ProductionService.php
index 3def773..81c244a 100644
--- a/app/Services/ProductionService.php
+++ b/app/Services/ProductionService.php
@@ -395,6 +395,15 @@ class ProductionService
         return $baseMass !== null ? $baseMass / 100.0 : 1.0;
     }
 
+    /**
+     * F-14: Hat das Produkt eine Massenbasis (Füllgewicht bzw. ml-Füllmenge), sodass
+     * Rezeptur-Prozente in Gramm je Stück umgerechnet werden können?
+     */
+    public function hasMassBasis(Product $product): bool
+    {
+        return $this->productBaseMassPerPiece($product) !== null;
+    }
+
     /**
      * Massenbasis (Gramm) je produziertem Stück: explizites Füllgewicht hat Vorrang;
      * sonst gilt bei ml-Produkten (unit = 1) die Füllmenge als Gramm (1 g/ml).
diff --git a/resources/views/admin/inventory/raw-material-stock/show.blade.php b/resources/views/admin/inventory/raw-material-stock/show.blade.php
index 85cfe2d..cc95a23 100644
--- a/resources/views/admin/inventory/raw-material-stock/show.blade.php
+++ b/resources/views/admin/inventory/raw-material-stock/show.blade.php
@@ -95,25 +95,35 @@
                         <tr>
                             <th>{{ __('Produkt') }}</th>
                             <th class="text-right">{{ __('Produktbestand') }}</th>
-                            <th class="text-right">{{ __('Rezeptur-Anteil (g/Stück)') }}</th>
+                            <th class="text-right">{{ __('Anteil (%)') }}</th>
+                            <th class="text-right" title="{{ __('Anteil × Füllgewicht × Überschuss-Faktor — wie in der Produktion gerechnet') }}">{{ __('Verbrauch (g/Stück)') }}</th>
                         </tr>
                     </thead>
                     <tbody>
                         @forelse($ingredient->products as $product)
+                            @php $usage = $recipeUsage[$product->id] ?? null; @endphp
                             <tr>
                                 <td>{{ $product->name }}</td>
                                 <td class="text-right">{{ \App\Services\Util::formatNumber($productStock[$product->id] ?? 0, 0) }} {{ __('Stück') }}</td>
                                 <td class="text-right">
-                                    @if($product->pivot->gram !== null && $product->pivot->gram !== '')
-                                        {{ \App\Services\Util::formatNumber($product->pivot->gram, 2) }} g
+                                    @if($usage)
+                                        {{ \App\Services\Util::formatNumber($usage['percent'], 2) }} %
                                     @else
                                         <span class="text-muted">—</span>
                                     @endif
                                 </td>
+                                <td class="text-right">
+                                    @if($usage && $usage['consumption_per_piece'] !== null)
+                                        {{ \App\Services\Util::formatNumber($usage['consumption_per_piece'], 2) }} g
+                                        <span class="text-muted small">({{ __('netto') }} {{ \App\Services\Util::formatNumber($usage['grams_per_piece'], 2) }} g)</span>
+                                    @else
+                                        <span class="text-muted" title="{{ __('Kein Füllgewicht hinterlegt') }}">—</span>
+                                    @endif
+                                </td>
                             </tr>
                         @empty
                             <tr>
-                                <td colspan="3"><div class="wawi-empty">{{ __('Dieser Rohstoff wird in keiner aktiven Rezeptur verwendet.') }}</div></td>
+                                <td colspan="4"><div class="wawi-empty">{{ __('Dieser Rohstoff wird in keiner aktiven Rezeptur verwendet.') }}</div></td>
                             </tr>
                         @endforelse
                     </tbody>
diff --git a/tests/Feature/RawMaterialStockTest.php b/tests/Feature/RawMaterialStockTest.php
index c798f62..6d483b3 100644
--- a/tests/Feature/RawMaterialStockTest.php
+++ b/tests/Feature/RawMaterialStockTest.php
@@ -495,3 +495,27 @@ test('F-11: admins sehen den letzten einkaufspreis weiterhin', function () {
         ->assertSuccessful()
         ->assertSee('123,45');
 });
+
+test('F-14: enthalten-in zeigt anteil in prozent und verbrauch je stück inkl. faktor, phasen summiert', function () {
+    $user = ap10MakeUser(1);
+    $ing = ap10MakeIngredient('F14-Anteil');
+
+    // 50-g-Produkt, 20 % mit Faktor 1,1 → netto 10 g, Verbrauch 11 g je Stück.
+    $single = Product::query()->create(['name' => 'F14-Einfach', 'title' => 'x', 'active' => true, 'production_relevant' => true, 'fill_weight' => 50]);
+    ProductIngredient::query()->create(['product_id' => $single->id, 'ingredient_id' => $ing->id, 'pos' => 0, 'gram' => 20, 'factor' => 1.1, 'recipe_type' => 'manufacturer']);
+    // INCI-Zeile desselben Produkts darf nicht mitzählen.
+    ProductIngredient::query()->create(['product_id' => $single->id, 'ingredient_id' => $ing->id, 'pos' => 0, 'gram' => 99, 'factor' => 1.0, 'recipe_type' => 'product']);
+
+    // Zwei Phasen 6 % + 4 % bei 100 g → 10 %, Verbrauch 10 g (Faktor 1,0).
+    $phased = Product::query()->create(['name' => 'F14-Phasen', 'title' => 'x', 'active' => true, 'production_relevant' => true, 'fill_weight' => 100]);
+    ProductIngredient::query()->create(['product_id' => $phased->id, 'ingredient_id' => $ing->id, 'pos' => 0, 'gram' => 6, 'factor' => 1.0, 'recipe_type' => 'manufacturer']);
+    ProductIngredient::query()->create(['product_id' => $phased->id, 'ingredient_id' => $ing->id, 'pos' => 1, 'gram' => 4, 'factor' => 1.0, 'recipe_type' => 'manufacturer']);
+
+    $this->actingAs($user, 'user');
+    $html = $this->get(route('admin.inventory.raw-material-stock.show', $ing))->assertSuccessful()->getContent();
+
+    expect($html)->toContain('20,00 %')->toContain('11,00 g')->toContain('netto 10,00 g')
+        ->toContain('10,00 %')->toContain('10,00 g')
+        ->not->toContain('99,00');
+    expect(substr_count($html, 'F14-Einfach'))->toBe(1);
+});