⭐ Buttermilk (Best Fat-Free Option)
3/4 cup buttermilk per 1 cup sour cream Quick tip: Thinner consistency; adds acidity but may require thickening agents.
Buttermilk is acidic and helps tenderize meat effectively, but its liquid consistency is much thinner than sour cream, which can dilute the marinade. The acidity is beneficial for breaking down proteins and adding tang.
To mimic sour cream’s thickness, combine buttermilk with a small amount of plain yogurt or a thickener like cornstarch. Stir well to achieve a creamy texture.
The marinade will be more fluid and slightly less creamy, but the tenderizing effect and tanginess will be preserved.