Do you know What is Soured Milk and Frozen Yogurt. If you are looking for the definition of Soured Milk and Frozen Yogurt or want to know what is Soured Milk and Frozen Yogurt?, then this is where you will fetch your answers. Well, in simple terms Soured milk is a food product, distinguished from spoiled milk, and is a general term for milk that has acquired a tart taste, either through the addition of an acid, such as lemon juice or vinegar, or through bacterial fermentation. While