I see that it is your first game. Congratz for submitting the game ! Now, there's a few things you could improve. You can do a small animation, or text, when a potato is cooled down so that the player can feel rewarded. Right now we get the next potato instantly and the player can never rest. Then you could add some obstacle. Like things between your hand that could catch the potato and that would be a bad thing. Like that the best strategy won't be to switch the potato fast anymore.
I encourage you to make more game ! Congratz !