Corn and Flour Tortillas to Pressing and Warming

What corn brings

A true corn tortilla starts with nixtamalisation, a process developed in Mesoamerica thousands of years ago. Dried corn is simmered and soaked in water with calcium hydroxide, known in Mexico as cal. This loosens the tough outer skin, makes the corn easier to grind and improves its nutritional value by freeing niacin. The result, ground fresh, is masa: a soft dough with a gentle, mineral, toasty flavour you cannot get from plain cornmeal.

At home, most cooks use masa harina, which is nixtamalised corn that has been dried and ground into flour. Brands differ in coarseness, so expect to adjust water slightly. Corn colour matters too: white corn is mild, yellow is a little sweeter, and blue corn, common around Mexico City and Tlaxcala, tastes nuttier and slightly earthy.

Corn tortillas are sturdy once warm, and their flavour stands up to bold fillings: guajillo-braised beans, smoky mushrooms or salsa-soaked potatoes. For juicy fillings, taquerías often double up small tortillas so one can catch drips while the other holds shape.

What flour brings

Wheat arrived with the Spanish, and flour tortillas became especially rooted in northern Mexico, in states like Sonora, Chihuahua and Coahuila, where wheat grew well. They are made with wheat flour, fat (traditionally lard, often vegetable shortening or oil today), salt, a little baking powder in some versions, and warm water. In Sonora, you may meet sobaqueras, huge, paper-thin flour tortillas stretched over the forearm.

Flour tortillas are soft, pliable and fairly neutral. They suit fillings where the tortilla should step back: grilled vegetables with melted cheese, refried beans with rice, or breakfast fillings of egg and potato. They also fold without tearing, which is useful for children and for tacos that travel.

Press homemade corn tortillas

Mix the masaCombine 250 g masa harina with about 330–360 ml warm water and a pinch of salt. Knead until it feels like soft play dough and does not stick to your palm.
Rest and testCover for 15–30 minutes. Press a small ball between your palms; if the edges crack, add water a spoonful at a time.
Press between plasticLine a tortilla press with two pieces of a cut freezer bag. Press a 35 g ball to about 13–15 cm across.
Cook in three turnsOn a hot, dry comal or heavy pan, cook 30–40 seconds, flip and cook 45–60 seconds, flip again. A gentle press often makes it puff.
Rest in a clothStack cooked tortillas in a clean towel or tortilla warmer so the steam softens them.

Soft-lit 3D render of a cast-iron tortilla press with small balls of yellow masa dough on a plain background

Warm shop-bought tortillas properly

Packaged corn tortillas often crack because they are cold and slightly dry. Heat a dry pan until hot, warm each tortilla for 20–30 seconds per side until flexible and lightly speckled, then stack them in a cloth. If they are very dry, flick a few drops of water on each before heating. Flour tortillas need less time, about 15 seconds per side, and should stay soft rather than crisp. Avoid the microwave for large batches; it makes corn tortillas rubbery once they cool.

Pair the tortilla with the filling

Filling type	Best tortilla	Why
Saucy braised beans or stews	Two small corn tortillas	Corn holds up to moisture; doubling prevents tearing
Grilled vegetables with cheese	Flour, medium size	Soft wheat melts into the cheese and folds easily
Crisp potato or fried fish	Corn, single layer	Toasty corn flavour complements crisp textures
Egg and potato breakfast tacos	Flour	Neutral and pliable for mild, soft fillings

Regional context: "street-style" small tacos on doubled corn tortillas reflect Mexico City taquería culture. Hard-shell, U-shaped tacos are a US innovation. Both are valid at home; we simply label which tradition a style comes from.