Sour Cream (Best Option)
1/4 cup per 3 eggsSour cream has a comparable fat content and acidity to Greek yogurt, which helps to tenderize the eggs and add a subtle tang that brightens the flavor profile. The consistency is thick enough to incorporate smoothly without thinning the egg mixture excessively.
When using sour cream, whisk it thoroughly with the eggs to ensure even distribution. Avoid adding too much as it can make the frittata overly rich and dense. Adjust seasoning slightly to balance the tang.
Compared to Greek yogurt, sour cream yields a similarly creamy texture and tangy taste, resulting in a frittata that is moist, tender, and flavorful without significant changes in cooking time or texture.