How to Make Corn Tortillas (Just Masa Harina and Water)
Masa Harina, Water, and a Hot Skillet
Corn tortillas need exactly two ingredients: masa harina and warm water. Mix them into a dough the texture of Play-Doh, rest it, press balls of dough flat, and cook each round on a hot, dry skillet in three turns — roughly two minutes apiece. No press required. Budget about an hour from bag to table, not the thirty minutes often claimed: one skillet cooks one tortilla at a time, and a batch is eighteen of them.
Masa harina is corn that has been nixtamalized — cooked and steeped in an alkaline lime solution — then ground and dried. That process gives tortillas their flavor and flexibility. Cornmeal and corn flour are not substitutes; they skip nixtamalization and turn out crumbly, flat-tasting rounds. Look for bags labeled "masa harina" or "instant corn masa flour."
The Masa Harina to Water Ratio
Start with 2 cups masa harina to 1½ cups warm water, plus ½ teaspoon of fine salt. That is a starting point, not a law: brands absorb water differently, and so does the humidity in your kitchen. Expect to add another tablespoon or two as you knead.
| Ingredient | Amount | Notes |
|---|---|---|
| Masa harina | 2 cups (about 240 g) | Spoon and level — scooping packs the cup and throws the ratio dry |
| Warm water | 1½ cups (355 ml, 355 g) | Warm to the touch, not boiling; warm water hydrates masa faster |
| Fine salt | ½ teaspoon (about 3 g) | Stir into the dry masa so it dissolves evenly |
That is about 598 g of dough — roughly 18 tortillas at about 6 inches, a comfortable taco size. Halve or double it freely; the ratio holds.
The dough is right when a pinched piece feels like soft Play-Doh: moist enough not to crack when squeezed, dry enough not to stick to your palm. Too dry and the edges split as you press; too wet and it glues itself to the plastic.
Step by Step
- Mix. Stir the salt into the masa harina, add the warm water, and mix by hand until a shaggy dough forms — about a minute.
- Knead. Work it in the bowl 2 to 3 minutes until smooth, adding water a tablespoon at a time if it feels crumbly.
- Rest. Cover with a damp towel and wait 15 to 30 minutes. This lets the masa fully hydrate; skipping it is the most common cause of cracked edges.
- Portion. Roll into balls about 1½ inches across (about 33 g each), a little smaller than a golf ball. You should get around 18. Keep them covered.
- Press. Flatten each ball between two pieces of plastic to about 1/16 inch, which spreads 33 g to roughly a 6-inch round — thin enough to just see your hand's shadow through it.
- Cook. Heat a dry skillet or comal over medium-high. Cook about 30 seconds on the first side, flip, cook 60 seconds, flip back for a final 15 to 30 seconds. Press the next ball while this one cooks. With luck it puffs like a balloon — steam separating the layers, the sign of a well-made tortilla. No puff? It will still taste great.
- Stack. Move each finished tortilla into a towel-lined bowl and keep it covered. They steam each other soft as the stack grows.
How Long This Actually Takes
About 4 minutes to mix and knead, 15 to 30 hands-off minutes to rest, then 32 to 36 minutes at the stove, since 18 tortillas at roughly 2 minutes each go through one skillet in sequence. Pressing overlaps with cooking, so call it 55 minutes to a little over an hour. A second skillet halves the griddle stretch and brings the batch in around 40 minutes; halving the recipe does the same.
No Tortilla Press? No Problem
A press is convenient, not necessary. Two methods work just as well:
- Flat-bottomed pot or skillet: Put the ball between two squares of a cut-open zip-top bag and press straight down with slow, even pressure. Rotate the plastic a quarter turn and press again for an even round.
- Rolling pin: Roll over the plastic-sandwiched ball, flipping the packet once, until thin. The shape is less perfectly round; the taste is identical.
Cut plastic beats parchment or plastic wrap — the tortilla peels off cleanly instead of tearing.
Why Do My Corn Tortillas Crack?
Cracking is almost always a hydration problem, with three usual causes:
- The dough is too dry. If edges split as you press, knead in water a teaspoon at a time until a squeezed piece no longer cracks.
- You skipped the rest. Masa needs 15+ minutes to absorb water fully. Dough that felt fine at first can press dry.
- The balls sat uncovered. Masa loses surface moisture fast, and in a batch this size the last ball waits half an hour for its turn. Keep them under a damp towel until you press.
Overcooking causes the other failure: tortillas that leave the skillet fine but stiffen into crackers. Pull them while flexible with light brown spots, not rigid.
How to Keep Corn Tortillas Soft
Softness is mostly trapped steam. Stack tortillas in a towel as they come off the heat and let them rest 10 minutes before serving — and since the batch takes half an hour at the stove, the early ones will have done exactly that by the time the last lands. Leftovers keep in a sealed bag in the fridge about 4 days; reheat one at a time on a dry skillet 20 to 30 seconds per side, which revives them far better than a microwave.
Warm tortillas want something bright alongside. A bowl of fresh pico de gallo is the natural partner, and the full tortillas and masa collection picks up where this recipe leaves off.