Buttermilk is primarily due to lactic acid produced by lactic acid bacteria while fermenting lactose, the primary sugar in milk. As the bacteria produce lactic acid, the pH of the milk decreases and casein, the primary milk protein, precipitates, causing the curdling or clabbering of milk. This process makes buttermilk thicker than plain milk. While both traditional and cultured buttermilk contain lactic acid, traditional buttermilk tends to be less viscous, whereas cultured buttermilk is more viscous. Buttermilk can be drunk straight, and it can also be used in cooking. Soda bread is a bread in which the acid in buttermilk reacts
Buttermilk Crispy Tenders tortilla, priced at 99¢-$1.39 depending on the market. Chicken Selects were discontinued in 2013. The product briefly returned in 2015, but was again dropped. In August 2017, Chicken Selects returned to the menu under the name "Buttermilk Crispy Tenders". Ingredients for the Chicken Selects Premium Breast Strip are listed as "Chicken breast strips, water, seasoning [salt, monosodium glutamate, carrageenan gum, chicken broth, natural flavor (plant and animal source), maltodextrin, spice, autolyzed yeast extract, chicken fat, polysorbate 80], modified potato starch, and sodium phosphates. Breaded with: wheat flour, water, food starch-modified, salt, spices, leavening (baking soda, sodium aluminum phosphate, monocalcium phosphate),