Don't have this? Try this!
Baking powder, 1 teaspoon 1/2 tsp cream of tartar plus 1/4 tsp baking soda
Balsamic vinegar, 1 tablespoon 1 tbsp cider vinegar or red wine vinegar, plus 1/2 tsp sugar
Buttermilk, 1 cup 1 tbsp lemon juice or vinegar, plus enough milk to make 1 cup (let stand 5 minutes) or 1 cup plain yogurt
Cornstarch, 1 tablespoon 2 tbsps all purpose flour
Corn syrup (light), 1 cup 1 cup granulated sugar plus 1/4 cup water
Half and half or light cream, 1 cup 1 tablespoon melted butter plus enough whole milk to make 1 cup
Molasses, 1 cup 1 cup honey
Sour cream, 1 cup 1 cup plain yogurt or greek yogurt