What is Gluten? Let’s start with the basics on gluten. Gluten is a protein found in wheat, rye, barley and oats*. Foods that contain gluten include pasta, bread, crackers, cookies, cereal, but it is also hidden in some foods like some canned soups, soy sauce, licorice, some chocolates, salad dressings and more. Gluten does not include all starchy foods or carbohydrates. Rice, potatoes, sweet potatoes, corn, and quinoa are naturally gluten-free. Fruits, vegetables, eggs, fish (non-breaded) and fresh meats are also gluten-free. *Oats are naturally gluten-free, but they are often contaminated