Buttermilk is key to the bread rsquo s flavor texture and rise the bread will not rise without it if you don rsquo t have any buttermilk on hand you can make a homemade ldquo diy rdquo version whole milk or 2 milk is best though lower fat or nondairy milks work in a pinch add 1 tablespoon of lemon juice or white vinegar to a liquid measuring cup.