Quick bread leavening agents include a weak base, such as baking soda (sodium bicarbonate) plus a weak acid, such as cream of tartar, lemon juice, or cultured buttermilk, to create an acid–base reaction that releases carbon dioxide. (Quick bread leavened specifically with baking soda is often called "soda bread".) Baking powder contains both an acid and a base in dry powdered form, and simply needs a liquid medium in which to react. Other alternative leavening agents are egg whites mechanically beaten to form stiff peaks, as in the case of many waffle recipes, or steam, in the case of cream puffs. Nevertheless,
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),