Is Quinoa Gluten Free?

Yes, quinoa is naturally gluten free. It contains none of the proteins found in wheat, barley, or rye, and has been feeding people in the Andes for several thousand years without anyone developing a problem with gluten.

So why do I still feel glutened 40% of the time I consume quinoa?

The issue is what happens to it after it leaves the field. Quinoa is frequently grown alongside gluten-containing grains and processed on shared equipment, which means an unlabelled bag carries a real cross-contamination risk for celiacs. Buy certified or labelled GF quinoa and you’re fine. Eat it from a bulk bin or unlabelled bag and you’re taking your chances.

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What is Quinoa?

Quinoa (pronounced keen-wah, not kwi-NO-ah, not that it matters much on a menu) is technically a seed rather than a grain. It’s a pseudocereal botanically related to spinach and amaranth, native to the Andean region of northwestern South America. It behaves like a grain in the kitchen — it cooks in water, it goes fluffy, you can use it anywhere you’d use rice — but it’s not from a grass plant. Which is exactly why it doesn’t contain gluten.

It originated with the Incas in the mountains of Bolivia, Chile and Peru, and has been at the forefront of Andean diets for around 5,000 years. The Incas called it chisaya mama, the mother of all grains, and treated it as a sacred crop. For the Inca civilisation it was a staple food, second in importance only after the potato. Then the Spanish arrived in the 1530s, destroyed quinoa fields to suppress indigenous culture, and forced farmers to grow wheat and barley instead. Quinoa retreated to the high mountain regions and was largely forgotten outside South America for several centuries.

It’s back now, obviously. You’ll find it in every health food shop in Europe and North America, usually next to the chia seeds and the spirulina. Until 2008, 90% of the world’s supply came from Peru and Bolivia alone. That’s still largely where it comes from, even if it’s now grown experimentally in several other countries. If you’ve cycled in Peru, Bolivia, or Chile, you’ve almost certainly eaten it — it appears in soups, stews, salads, and as a side dish across the entire Andean region.

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So is Quinoa Gluten Free?

Yes. Quinoa does not contain gluten. It has no biological connection to wheat, barley, or rye. It is 100% naturally gluten free in all its forms and varieties. This applies to whole quinoa seeds, quinoa flakes, quinoa flour, and puffed quinoa.

The complication is cross-contamination during growing, harvesting, and processing. Quinoa and other gluten-free grains are often grown and harvested with wheat, barley, and rye. Cross-contact can occur because of this, making a gluten-free grain no longer safe for a person with celiac disease.

The numbers on this are worth knowing. In a study by Tricia Thompson et al, 32% of the gluten-free grain samples that were not labelled gluten-free contained mean gluten levels at or above 20 ppm — the threshold above which something is not considered gluten free under EU labelling laws. That’s nearly one in three unlabelled bags. For celiacs, that’s not a comfortable statistic.

Packaged products frequently have the “May contain gluten” label. With most, I don’t react. With grains and pulses, I consistently react to those that have this label on their package. Every celiac knows to avoid uncertified oats due to the cross-contamination risks, and with other grins, the exact same principle is relveant.

The fix is simple: buy quinoa that is labelled or certified gluten free, and the risk drops dramatically. The possibility for contamination confirms the importance of eating only those quinoa products that are labelled gluten-free and tested for gluten contamination.

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What is Quinoa Used For?

Quinoa is a healthy and useful staple in a celiac’s travelling kitchen. It cooks in about 15 minutes, it’s high in protein, and it goes with almost anything. In South America, particularly in Peru, Bolivia, and the Andean regions of Chile and Ecuador, it appears in a huge range of dishes, most of which are naturally gluten free.

Gluten Free Quinoa Dishes

Dish	Description
Sopa de quinoa	Classic Andean quinoa soup with vegetables — carrots, leek, cabbage, potato. A staple across Peru, Bolivia and Ecuador. Naturally GF; check that stock isn’t from a gluten-containing cube.
Quinoa con leche	A sweet, porridge-like breakfast dish made with quinoa simmered in milk, sugar, and cinnamon. The Andean answer to rice pudding.
Ensalada de quinoa	Quinoa salad, common in tourist restaurants across South America. Usually naturally GF — check for croutons or any wheat-containing additions.
Quinoa as a rice substitute	Used as a side dish in place of rice across the Andes. Ordered alongside grilled meat or fish, it’s safe.
Pesque	A Bolivian speciality — quinoa cooked with milk and cheese until thick and creamy. Naturally GF.
Chicha de quinoa	A traditional fermented quinoa drink, distinct from the more common chicha morada (made from purple corn). Naturally GF.

Dishes to Check

Dish	Risk
Quinoa cooked in stock	Many recipes call for chicken or vegetable stock. In restaurants, stock cubes may contain gluten — always ask.
Quinoa in processed foods	Quinoa energy bars, quinoa crackers, quinoa pasta — always check the label. The quinoa itself may be fine but other ingredients or shared equipment may not be.
Quinoa flour baked goods	GF in principle, but baked goods using quinoa flour may also contain wheat flour. Check ingredients.
Restaurant quinoa dishes	Shared pans and utensils are a cross-contamination risk. In places with good celiac awareness (many Santiago restaurants, for example) this is less of a concern. In rural South America, it’s worth asking.

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Buying Quinoa in South America

If you’re travelling through Peru, Bolivia, Chile, or Ecuador, quinoa is everywhere — in markets, supermarkets, and on pretty much every restaurant menu in the Andean highlands. For eating out, the dishes above are generally safe; just check on stock and shared equipment as usual.

For buying packaged quinoa, the same rule applies: look for a GF label. In supermarkets in Lima, La Paz, Quito, and Santiago you’ll find labelled GF quinoa from local brands as well as the better-known international ones. In smaller towns and rural markets, you’re more likely to find quinoa sold loose from sacks, which is culturally fantastic but cross-contamination-wise, a bit of a lottery. If you’re self-catering on a remote route, I’d suggest buying your labelled quinoa in the last big city before you head out.

For more on the celiac landscape in each country, have a read of our Gcountry guides.

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For more information on celiac disease and the gluten-free diet, the Beyond Celiac and National Celiac Association websites are solid resources.