Gluten is the generic name for certain types of proteins contained in the common cereal grains wheat, barley, rye and their derivatives that must be eliminated in patients with celiac disease. The good news is that all fresh fruits, vegetables, beef, chicken, fish, lamb, pork and dairy products are naturally gluten-free.
Rice, corn (maize), soy, potato, tapioca, beans, garfava, sorghum, quinoa, millet, buckwheat, arrowroot, amaranth, teff, Montina®, flax, and nut flours
Research indicates that pure, uncontaminated oats consumed in moderation (up to 1/2 cup dry oats daily) are tolerated by most celiacs. Gluten-free oats are currently available in the United States
Distilled alcoholic beverages and vinegars are gluten-free. Distilled products do not contain any harmful gluten peptides. Research indicates that the gluten peptide is too large to carry over in the distillation process. This process leaves the resultant liquid gluten-free.
Wines and hard liquor/distilled beverages are gluten-free. Beers, ales, lagers and malt vinegars that are made from gluten-containing grains are not distilled and therefore, are not gluten-free. Gluten-free beers are available.
Wheat (einkorn, durum, faro, graham, kamut, semolina, spelt), rye, barley and triticale
Contamination in Food Preparation
When preparing gluten-free foods they must not come in contact with food containing gluten. Contamination can occur if foods are prepared on common surfaces, or with utensils that are not thoroughly cleaned after preparing gluten-containing foods. Using a common toaster for GF bread and regular bread is a major source of contamination.
Flour sifters should not be shared with gluten-containing flours. Deep fried foods cooked in oil shared with breaded products should not be consumed. Spreadable condiments in shared containers may also be a source of contamination. When a person dips into a condiment a second time, with the knife (used for spreading), the condiment becomes contaminated with crumbs (e.g. mustard, mayonnaise, jam, peanut butter and margarine).
Wheat flour can stay airborne for many hours in a bakery (or at home) and contaminate exposed preparation surfaces and utensils or uncovered gluten-free products. Likewise, foods not produced in a gluten-free environment have the potential to be contaminated with gluten. This may occur when machinery or equipment is inadequately cleaned after producing gluten-containing foods.