⭐ Sour Cream (Best Nut-Free Option)
1:1 (1 cup sour cream per 1 cup Greek yogurt)Sour cream has a comparable fat content and acidity to Greek yogurt, which helps maintain the soup’s creamy texture and tangy flavor profile without curdling when heated moderately. The lactic acid bacteria in sour cream also contribute to a pleasant tartness similar to Greek yogurt.
When using sour cream, add it towards the end of cooking and avoid boiling to prevent separation. Stir gently and heat slowly to maintain a smooth consistency.
The final soup will have a slightly richer and less dense texture compared to Greek yogurt, but the flavor and mouthfeel remain very close, making it an excellent substitute.