How To Choose Between Whole Milk And Buttermilk When Baking Cake - Chowhound

Olivka888/Shutterstock When comparing whole milk and buttermilk, we know that buttermilk is thicker than regular milk, and it has a tart, somewhat pungent flavor. But what is buttermilk, exactly? Essentially, it's a fermented milk. Traditionally, buttermilk was the byproduct of butter churning. When the butter fats would solidify from the churning cream, there would be some liquid milk left over. Originally, that…