I added sour cream to my yellow cake mix instead of oil. 45 minutes later, this is what happened

hoping for a very light, lofty birthday-cake texture, this isn’t quite that. Sour cream adds richness and moisture, but it doesn’t behave the same way oil does in helping create that lighter crumb.

Freshly baked sheet cake with flat golden top
Freshly baked sheet cake with flat golden top
5. The crumb was tighter and more velvety

Once the cake cooled for about 25 minutes, I cut into a corner, and this is where the sour cream really showed itself. The crumb was finer and tighter, almost like the difference