Dairy Free Market offers many Gluten Free and Casein Free products. A Gluten Free Casein Free Diet or GFCF diet is one in which all the sources of Gluten, a protein found in foods and products containing wheat, rye or barley, and Casein, a protein found in most dairy products such as milk, cheese and yogurt is eliminated from the diet. Many people suffering from Autism and related conditions eliminate these products from their diets.