What does cream of tartar do when added to a recipe?

1. Stabilizes whipped cream. Cream of tartar helps to stabilize whipped cream by preventing the fat from separating from the liquid. This is because it reacts with the proteins in the cream to form a network that traps the fat globules.

2. Prevents sugar from crystallizing. Cream of tartar also prevents sugar from crystallizing, which is why it is often added to recipes like meringues and icings. This is because it interferes with the formation of sugar crystals, resulting in a smoother, creamier texture.

3. Leavens baked goods. Cream of tartar is a leavening agent, which means that it helps to make baked goods rise. This is because it reacts with baking soda to produce carbon dioxide gas, which causes the batter or dough to expand.

4. Tenderizes meat. Cream of tartar can also be used to tenderize meat. This is because it helps to break down the proteins in the meat, making it more tender and flavorful.

5. Thickens sauces and custards. Cream of tartar can also be used to thicken sauces and custards. This is because it reacts with the proteins in the milk or cream to form a gel, which thickens the liquid.