diff --git a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/Corn.cs b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/Corn.cs
index a1c879a4..4d47ba60 100644
--- a/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/Corn.cs
+++ b/popcorn/Assets/MyGame/Scenes/Cooking/Scripts/Corn.cs
@@ -55,18 +55,25 @@ public class Corn : MonoBehaviour
 
     private void Start()
     {
-        rigidbody.MovePosition(new Vector2(Random.value * 2 - 1, Random.value * 2 - 1));
-        rigidbody.SetRotation(Random.value * 360);
+        rigidbody.MovePosition(Random.insideUnitCircle);
+        rigidbody.SetRotation(Random.rotation);
         cornSkin.ChangeSkin(condition.Value);
 
         // コーン飛び出し演出
         this.ObserveEveryValueChanged(x => x.rigidbody.velocity.magnitude)
             .Where(x => x >= cornSpillSpeed)
+            .ThrottleFirstFrame(30) // 30フレーム間隔開ける
+            .Select(_ => Random.value <  .2f) // 演出を出す確率
             .FirstOrDefault()
             .Subscribe(_ =>
             {
                 spilled.Value = true;
-                CornSpilled();
+                var clone = Instantiate(cornSkin);
+                clone.ChangeSkin(condition.Value);
+                var cloneRigidBody = clone.gameObject.AddComponent<Rigidbody2D>();
+                cloneRigidBody.gravityScale = 0;
+                cloneRigidBody.AddForce(rigidbody.velocity.normalized  * 20f, ForceMode2D.Impulse);
+                this.CallWaitForSeconds(2f, () => Destroy(clone.gameObject));
             }).AddTo(this);
 
         condition.Pairwise().Subscribe(x =>
@@ -111,7 +118,7 @@ public class Corn : MonoBehaviour
     private void CornPop()
     {
         cornSkin.ChangeSkin(condition.Value);
-        rigidbody.AddForce(cornPopSpeed * new Vector2(Random.value * 2 - 1, Random.value * 2 - 1), ForceMode2D.Impulse);
+        rigidbody.AddForce(cornPopSpeed * Random.insideUnitCircle, ForceMode2D.Impulse);
         animator.SetTrigger(HashCornGrow);
         VibrationManager.Instance.PlayVibrationOnce();
     }
@@ -124,16 +131,6 @@ public class Corn : MonoBehaviour
         this.CallWaitForSeconds(.8f, () => Destroy(effect));
     }
 
-    private void CornSpilled()
-    {
-        var clone = Instantiate(cornSkin);
-        clone.ChangeSkin(condition.Value);
-        var cloneRigidBody = clone.gameObject.AddComponent<Rigidbody2D>();
-        cloneRigidBody.gravityScale = 0;
-        cloneRigidBody.AddForce(rigidbody.velocity.normalized * cornSpillSpeed, ForceMode2D.Impulse);
-        this.CallWaitForSeconds(2f, () => Destroy(clone.gameObject));
-    }
-
     public void SetCornProperty(float popTime, float burntDuration, float spillSpeed, float popSpeed)
     {
         cornPopTime = popTime;