Sour Cream (Best Option)
1:1 (replace Greek yogurt with equal volume of sour cream)Sour cream has a comparable fat content and acidity to Greek yogurt, which helps activate the baking soda and contributes to the bread's tender crumb. Its thick consistency also mimics Greek yogurt, ensuring the batterβs texture remains consistent.
When substituting, use the same amount as Greek yogurt. Ensure the sour cream is full-fat or at least 14% fat for best results. Avoid low-fat versions as they may alter moisture and texture.
The final banana bread will have a slightly tangy flavor and moist crumb, very close to the original made with Greek yogurt, with no noticeable difference in texture or rise.