Premium quality. Bob's Red Mill Dry Buttermilk Powder is produced from pure sweet cream buttermilk. It is easily rehydrated and may be used in any recipe that calls for buttermilk. In dry form, buttermilk lasts much longer than it does as a liquid, and it does not require refrigeration. It is also a good source of calcium and contains 5 grams of protein per serving. You can see our quality! Bob's Red Mill is the most unique flour mill in the Northwest. We use century old stone grinding equipment to freshly mill whole grain products. Delight your family with whole grain goodness. Wholesome. To your good health - Bob Moore. Visit us at www.bobsredmill.com. For information and recipes, visit our website at bobsredmill.com.