⭐ Sour Cream (Best Nut-Free Option)
1:1 (replace Greek yogurt with equal volume)Sour cream contains a comparable fat content and acidity level to Greek yogurt, which supports yeast fermentation by creating an optimal pH environment. Its moisture content is also similar, ensuring the dough consistency remains stable.
When substituting, use the same volume as Greek yogurt. Avoid sour cream varieties with added flavors or sweeteners, as these can interfere with yeast activity. Monitor dough hydration as slight adjustments may be needed depending on sour cream thickness.
The final bread will have a slightly tangier flavor but very close texture and rise to the original recipe, making sour cream the most reliable substitute in yeast bread applications.