Prepares yogurt in 6-10 hours, depending on thickness desired. Prepares al-natural, rich and creamy yogurt. Allows you to control the sweetness, ingredients, fat content, and thickness of yogurt. Make up to 42 ounces of yogurt. Timer on the side marks time when yogurt will be finished cooking. Clear lid allows for viewing of cooking process. Seven 6oz glass containers allows for making up to seven different types of yogurt at once.