diff --git a/popcorn/Assets/MyGame/Scenes/DebugOption/Scripts/DebugOptionManager.cs b/popcorn/Assets/MyGame/Scenes/DebugOption/Scripts/DebugOptionManager.cs
index 23c6f422..705a85dd 100644
--- a/popcorn/Assets/MyGame/Scenes/DebugOption/Scripts/DebugOptionManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/DebugOption/Scripts/DebugOptionManager.cs
@@ -65,7 +65,7 @@ public class DebugOptionManager : MonoBehaviour
             gameData.ShopStock = Enumerable.Repeat(1, 10).ToList();
             gameData.ShopStock.AddRange(Enumerable.Repeat(2, 10).ToList());
             gameData.StorageTanks[0].FlavorId = 2;
-            gameData.StorageTanks[0].Stock = 50;
+            gameData.StorageTanks[0].AddStock(ProductRarity.Normal, 50);
         }).AddTo(this);
         
         refillLittleProductButton.OnClickAsObservable().Subscribe(_ =>
diff --git a/popcorn/Assets/MyGame/Scenes/Main/Scripts/KitchenManager.cs b/popcorn/Assets/MyGame/Scenes/Main/Scripts/KitchenManager.cs
index 4b62046a..10eddf6d 100644
--- a/popcorn/Assets/MyGame/Scenes/Main/Scripts/KitchenManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/Main/Scripts/KitchenManager.cs
@@ -65,7 +65,6 @@ public class KitchenManager : MonoBehaviour
                     Capacity = 50,
                     FlavorId = -1,
                     Stock = 0,
-                    BonusRate = 0
                 }
             };
         }
diff --git a/popcorn/Assets/MyGame/Scenes/marketing/Scripts/StorageTank.cs b/popcorn/Assets/MyGame/Scenes/marketing/Scripts/StorageTank.cs
index 76349c4b..a2fa07a6 100644
--- a/popcorn/Assets/MyGame/Scenes/marketing/Scripts/StorageTank.cs
+++ b/popcorn/Assets/MyGame/Scenes/marketing/Scripts/StorageTank.cs
@@ -1,3 +1,5 @@
+using System.Collections.Generic;
+using System.Linq;
 using UnityEngine.Internal.VR;
 
 public class StorageTank
@@ -6,6 +8,33 @@ public class StorageTank
     public int Id;
     public int Capacity;
     public int FlavorId;
+    public int Stock
+    {
+        get => Stocks.Sum(x => x.Stock);
+        set => SetStock(ProductRarity.Normal, value);
+    }
+    public List<ProductStockData> Stocks = new List<ProductStockData>();
+
+    public void SetStock(ProductRarity rarity, int stock)
+    {
+        
+    }
+    
+    public void AddStock(ProductRarity rarity, int stock)
+    {
+        var stockData = Stocks.First(x => x.Rarity == rarity);
+        if (stockData is null)
+        {
+            Stocks.Add(new ProductStockData{FlavorId = FlavorId, Rarity = rarity, Stock = stock});
+            return;
+        }
+        stockData.Stock += stock;
+    }
+}
+
+public class ProductStockData
+{
+    public int FlavorId;
+    public ProductRarity Rarity;
     public int Stock;
-    public int BonusRate;
 }
\ No newline at end of file