diff --git a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
index 84c81432..de534a15 100644
--- a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
+++ b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/CornManager.cs
@@ -26,6 +26,7 @@ public class CornManager : MonoBehaviour
     
     private Corn[] cornArray;
     private bool isHot;
+    private bool isCompleted;
     private List<IObservable<CornCondition>> cornConditions = new List<IObservable<CornCondition>>();
     private readonly ReactiveProperty<float> cornGrowSpeed = new FloatReactiveProperty(0f);
     private readonly CompositeDisposable compositeDisposable = new CompositeDisposable();
@@ -43,6 +44,7 @@ public class CornManager : MonoBehaviour
 
     public void RespawnCorn()
     {
+        isCompleted = false;
         compositeDisposable.Clear();
         cornConditions.Clear();
         for (int i = 0; i < cornArray.Length; i++)
@@ -60,7 +62,7 @@ public class CornManager : MonoBehaviour
             cornArray[i] = corn;
             corn.SetCornProperty(baseCornPopTime, cornBurntDuration);
             
-            cornGrowSpeed.Subscribe(x =>
+            cornGrowSpeed.Where(_ => !isCompleted).Subscribe(x =>
             {
                 // コーンが弾けた後はRedの場合のみ焦げ進行する
                 if (corn.Condition.Value == CornCondition.Simple && !isHot)
@@ -90,20 +92,22 @@ public class CornManager : MonoBehaviour
         Observable.CombineLatest(cornConditions)
             .FirstOrDefault(x => !x.Contains(CornCondition.Seed))
             .Subscribe(x =>
-        {
-            if (x.Count(c => c == CornCondition.Simple) == x.Count) // すべてのコーンがPopped
             {
-                result.SetValueAndForceNotify(CornResult.Perfect);
-            }
-            else if (x.Count(c => c == CornCondition.Spilled) == x.Count) // すべてのコーンが飛び出した
-            {
-                result.SetValueAndForceNotify(CornResult.Failure);
-            }
-            else
-            {
-                result.SetValueAndForceNotify(CornResult.Good);
-            }
-        }).AddTo(compositeDisposable);
+                isCompleted = true;
+                cornGrowSpeed.Value = 0f;
+                if (x.Count(c => c == CornCondition.Simple) == x.Count) // すべてのコーンがPopped
+                {
+                    result.SetValueAndForceNotify(CornResult.Perfect);
+                }
+                else if (x.Count(c => c == CornCondition.Spilled) == x.Count) // すべてのコーンが飛び出した
+                {
+                    result.SetValueAndForceNotify(CornResult.Failure);
+                }
+                else
+                {
+                    result.SetValueAndForceNotify(CornResult.Good);
+                }
+            }).AddTo(compositeDisposable);
     }
 
     public void ChangeGrowSpeed(ThermalCondition condition)