What can you add to cool whip be able keep it at room temp?

Cream of tartar can be added to Cool Whip to help keep it stable at room temperature. Cream of tartar is a common baking ingredient that is derived from grapes and is often used to stabilize egg whites. When added to Cool Whip, it helps to prevent the whipped cream from deflating and becoming watery. To use, simply add 1/4 teaspoon of cream of tartar to 1 cup of Cool Whip and mix well. The Cool Whip will then be able to hold its shape and remain stable at room temperature for several hours.