Read our review at "No "Surprise" Parties with King Arthur Flour Gluten-Free Chocolate Cake Mix".
Ingredients: Sugar, Modified Tapioca Starch, Rice Flour, Cocoa (processed with alkali), Potato Starch, Emulsifiers (rice starch, polyglycerol esters of fatty acids), Black Cocoa (processed with alkali), Leavening (sodium acid phosphate, sodium carbonate, cornstarch, monocalcium phosphate), Salt, Xanthan Gum.
Allergen Disclosure: "Produced in a dedicated gluten-free, allergen-free* manufacturing facility. *free of the 8 most common food allergens."