Instead of whey, commercial buttermilk is made from cultured milk and can be full-fat, skim, or anything in between, but is usually made with low-fat milk. Though whey is still a byproduct of the ...
However, modern buttermilk is typically made by fermenting low-fat milk with lactic acid bacteria. Buttermilk has a thin consistency and a slightly sour taste, similar to curd. It is a rich source ...