⭐ Milk + Cream of Tartar (Best Fat-Free Option)
1 cup milk + 1 1/2 teaspoons cream of tartar Quick tip: Provides acidity for leavening but may impart a slight aftertaste if overused.
Cream of tartar is an acid that can replicate buttermilk's acidity when combined with milk. This acid-base reaction activates baking soda to leaven the scones.
Dissolve cream of tartar thoroughly in milk before mixing with dry ingredients. Avoid exceeding recommended amounts to prevent off-flavors.
This substitute yields scones with good rise and tender crumb, though the flavor may be less complex than with natural buttermilk.