The terms buttermilk and buttermilk are synonymous. The English equivalent, buttermilk , is also mentioned on some food packages. Like yogurt, buttermilk waits for poultry and meat. Experience soaking your chicken pieces in a bowl of buttermilk a few hours before cooking and see the difference. Colored berries (blueberries, raspberries) and some nuts may discolour muffin, pancake or cake dough. Given its acidity, buttermilk can help correct the situation, provided that the recipe is not too alkaline because of a significant amount of baking soda.