The present invention relates to instant acidified milk beverages and methods for producing such instant acidified milk beverages. More specifically, the present invention provides a powdered composition which can be added to a liquid milk product with minimal mixing to produce an instant acidified milk beverage having a smooth texture. Even more specifically, the powdered composition includes at least one edible monobasic salt of polyprotonic acid. The powdered composition may include a buffer salt, and other optional ingredients such as sweetener, thickener, fiber, bulking agent, anti-caking agent, fruit juice solid, flavor, and colorant, etc.