After we had cinnamon-topped biscuits at a restaurant, I came up with my own version at home. I keep crystallized ginger on hand so I can whip up a batch at a moment’s notice!—Rebecca Littlejohn, Vista, Califiornia

buttermilk

To substitute for each cup of buttermilk, use 1 Tbsp. white vinegar or lemon juice plus enough milk to measure 1 cup. Stir, then let stand 5 min. Or, use 1 cup plain yogurt or 1-3/4 teaspoon cream of tartar plus 1 cup milk.