Cream of tartar is a key ingredient in meringue, some creamy icings and candies, and is often used in old-fashioned biscuit recipes.

• A derivative of wine (who knew?!), cream of tartar improves the stability and volume of beaten egg whites.
• Use it in recipes where it’s called for.
• Value-priced 3-ounce jar is twice the size, and costs less per ounce, than supermarket brands.