Gluten-Free Tortillas and Wraps: Corn, Cassava and the Blends That Aren't

Wraps are one of the more useful things to get right on a gluten-free diet, because a thing that folds around a filling replaces sandwiches, and sandwiches are what most people miss first.

Corn tortillas are the obvious answer and they are usually correct. The exceptions are worth knowing, because they are not obvious at all.

Why some corn tortillas contain wheat

A traditional corn tortilla is masa, water and lime. Nothing else, and nothing with gluten in it.

Commercial corn tortillas are sometimes different. Wheat flour is added to some products to improve flexibility and stop them cracking — the persistent complaint about corn tortillas — and the resulting product is still sold as a corn tortilla because it is mostly corn.

These will declare wheat, because wheat is a major allergen in the US and must be. But you have to look, and the front of the pack will say "Corn Tortillas" in large letters while the ingredient list quietly says otherwise.

The other variant is the "corn and flour blend" tortilla, which is explicit about it if you read the name properly and easy to grab by mistake if you do not.

What works instead

Plain corn tortillas from a brand that labels them gluten-free are the cheapest and most widely available answer.

Cassava tortillas, of which Siete is the best known, are grain-free and hold up better to folding than most corn tortillas. They cost considerably more.

Almond flour and coconut flour wraps exist and behave differently again — softer, more fragile, often better cold than hot.

Dedicated gluten-free wraps, such as those from La Tortilla Factory's gluten-free line and Mission's gluten-free range, are engineered to behave like flour tortillas. As with any brand running a subset range, the claim is on the specific product rather than the brand.

The restaurant problem

A Mexican restaurant with corn tortillas is not automatically safe, for two reasons.

The first is the fryer. Tortilla chips and taco shells are usually fried in oil shared with breaded items, which puts gluten into something that started out fine.

The second is the tortilla press and the surfaces. A kitchen making both corn and flour tortillas is a kitchen with airborne wheat flour, shared presses and shared comals. Freshly made corn tortillas from that environment are not a safe product, however traditional they are.

Packaged is more reliable than fresh, which is a frustrating inversion of how food usually works.

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Making them work

Gluten-free wraps of every kind crack when cold and behave when warm. Ten to fifteen seconds in a dry pan, or a few seconds wrapped in a damp cloth in the microwave, changes them from brittle to foldable.

This is the single most common reason people conclude that gluten-free wraps do not work. Usually the wrap is fine and it was used straight from the fridge.

What to check on the pack

The allergen statement first. On a tortilla the question is almost always simply whether wheat is declared, and the "Contains" line answers it in a second.

Then the ingredient list, because a blend will list wheat flour openly and it is easy to miss on a pack that says corn on the front.

Then the gluten-free claim, which on a genuinely corn-only product is often absent simply because the manufacturer saw no reason to test — corn tortillas being naturally gluten-free. Absence of a claim here is weaker evidence than it is in a category like soup or snack bars.

A shelf worth keeping

Corn tortillas freeze well, thaw quickly and cost little. Cassava wraps are the ones to buy when you want something that behaves like a flour tortilla and are worth the price for that specific job rather than as an everyday item.

Between the two, most of what a sandwich used to do is covered.