Best Substitutes for Cream of Tartar
Cream of tartar stabilizes egg whites and activates baking soda — a mild acid can usually stand in.
Best overall swap
Lemon juice
1:1Good for stabilizing whipped egg whites or meringue; adds a faint tang that’s rarely noticeable.
All Substitutes for Cream of Tartar
Lemon juice
1:1Good for stabilizing whipped egg whites or meringue; adds a faint tang that’s rarely noticeable.
White vinegar
1:1Best for meringues and frostings where flavor is masked by sugar.
Baking powder
Replace both baking soda + cream of tartar with 1 1/2 tsp baking powder per 1/4 tsp soda + 1/2 tsp cream of tartarUse only when cream of tartar is paired with baking soda for leavening, not for meringue.