What foods are gluten-free? Grains, additives & common confusions.

When beginning a gluten-free diet — whether due to Celiac disease, a wheat allergy, or non-celiac gluten sensitivity — one of the biggest challenges isn't avoiding obvious wheat products like sandwich bread or regular pasta. The real headache comes from the gray areas.

Can you eat rice? Is soy naturally gluten-free? Why is angel food cake unsafe if it's mostly whipped egg whites? And what on earth is "modified food starch" doing on a label?

Below is a direct, no-nonsense reference guide answering the most commonly searched questions about what is — and isn't — gluten-free. For a printable companion, see our hidden gluten ingredient reference.

In their whole, unseasoned, and unprocessed forms, several entire food categories contain zero gluten proteins (gluten is found exclusively in wheat, barley, rye, and triticale):

• Fresh produce: All fresh fruits and vegetables.
• Fresh proteins: Unprocessed beef, poultry, pork, fish, seafood, and eggs.
• Plain dairy: Milk, plain yogurt, butter, and traditional aged cheeses. (Note: while dairy is naturally gluten-free, some people confuse lactose intolerance with gluten sensitivity — see food allergy vs. food intolerance — or encounter dairy items cross-contaminated with wheat-based thickeners.)
• Legumes, nuts & seeds: Beans, lentils, chickpeas, peanuts, almonds, walnuts, flax, and chia.

The risk in these categories almost never comes from the food itself — it comes from added seasonings, marinades, breading, or processing line cross-contact.

Is rice gluten-free?

Yes, all pure rice is naturally gluten-free. This includes white rice, brown rice, basmati, jasmine, wild rice, and arborio. Even "glutinous rice" (sticky rice used in Asian desserts and sushi) is completely gluten-free; the name refers to its sticky, glue-like texture caused by high amylopectin starch, not dietary gluten.

Is polenta gluten-free?

Yes, traditional polenta is gluten-free. Polenta is made simply from coarsely ground yellow cornmeal. Because corn is botanically distinct from wheat, pure cornmeal and polenta are safe.

Are oats gluten-free?

Yes, pure oats are naturally gluten-free — BUT they carry the highest cross-contact risk of any grain. Oats are commonly grown in crop rotation with wheat and processed on shared milling equipment. Furthermore, a small percentage of people with Celiac disease react to avenin, the protein in oats.

Is quinoa gluten-free?

Yes, 100%. Quinoa is technically a pseudo-cereal seed related to spinach and beets. It contains no gluten proteins and provides a nutrient-dense, high-protein alternative to wheat grains.

Is buckwheat gluten-free?

Yes, despite having "wheat" in its name, buckwheat is completely gluten-free. Buckwheat is another pseudo-cereal seed (related to rhubarb). Pure 100% buckwheat flour, groats (kasha), and traditional 100% buckwheat soba noodles are safe.

Is soy a gluten-free food?

Yes, whole soybeans and pure soy products are naturally gluten-free. Edamame, raw soybeans, pure soy milk, and traditional plain tofu (curdled soy milk) contain no gluten.

The major trap: traditional soy sauce

While soybeans are gluten-free, traditional brewed soy sauce is NOT gluten-free. Authentic soy sauce is brewed using roughly equal parts soybeans and crushed wheat. If a dish contains standard soy sauce, it contains wheat gluten — a key risk when ordering Chinese food and other soy-heavy cuisines.

Is angel food cake gluten-free?

No, traditional angel food cake is NOT gluten-free. Because angel food cake is prized for its airy, cloud-like texture and consists largely of whipped egg whites and sugar, many assume it is flourless. However, classic recipes fold in standard wheat cake flour to give the whipped egg whites structure. Unless specifically baked using certified gluten-free flour blends (such as rice flour or potato starch), angel food cake is unsafe.

Are French macarons gluten-free?

Typically yes, but verify the filling. Traditional French macarons are made from whipped egg whites, sugar, and almond flour, making the cookie shells naturally gluten-free.

When reading packaged ingredient decks, obscure additive names frequently cause panic. Here is how to evaluate the most common ones. (Imported items may follow different labeling standards abroad.)

Is modified food starch gluten-free?

In North America, almost always yes. Under FDA regulations in the United States, if modified food starch is derived from wheat, the word "wheat" must appear on the label (e.g., "modified wheat starch" or listed under the "Contains: Wheat" alert). If the ingredient simply states "modified food starch," it is derived from corn, waxy maize, potato, or tapioca, and is gluten-free. If buying imported packaged goods from Europe or Asia, always verify sourcing, as wheat starch derivation is more common abroad.

Is maltodextrin gluten-free?

Yes. In the US, maltodextrin is almost exclusively produced from corn, rice, or potato starch. Even when derived from wheat in European products, the chemical hydrolysis process purifies the starch to such a degree that it falls well below the 20 ppm FDA gluten-free threshold.

Is yeast gluten-free?

It depends on the type:

• Baker's yeast / active dry yeast: Gluten-free (grown on molasses or sugar cane).
• Nutritional yeast: Typically gluten-free (verify packaging for dedicated line certification).
• Brewer's yeast: NOT gluten-free. It is a byproduct of beer brewing and contains residual barley gluten — see our guide to food allergies and alcohol.

Tired of memorizing starch derivatives or wondering whether a restaurant's sauce contains hidden wheat? Skip the guesswork before you take a bite.

With Stuff I Can Eat, checking your meals is fast, accurate, and completely mobile-first:

• Instant menu checking: Paste a menu link, upload a PDF, or snap a photo of any restaurant menu to automatically flag safe items, caution dishes, and hidden gluten triggers across every course. Here's how menu scanning works.
• Custom server questions: Get tailored questions to ask your server to confirm separate pasta pans and crouton-free salad preparation.
• Digital chef cards: Show a clear, customized allergy card right on your phone screen — with explicit safety guidelines for the kitchen.