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This Little-Known Step Is Critical For Making Truly Authentic Tacos, And Once You Learn It, You'll Never Forget It

The secret behind authentic tacos? It's all in this fascinating, little-known process...

We all live for Taco Tuesday, but let’s be real: a lot of us have no clue how a real tortilla is supposed to be made. Meet the ancient secret behind every authentic tortilla: nixtamalization, the centuries-old process that turns corn into the heart of Mexican cuisine. 🇲🇽

Three tacos with grilled meat, onions, and cilantro on a wooden plate, served with a lime wedge

Tasty was invited to Four Seasons Resort Tamarindo, where Chef Miguel Soltero and Chef Aharon Pando took us to Rancho Lola to reconnect with Mexico’s corn heritage.

Two people smiling in front of an outdoor brick oven. Both appear relaxed and happy, wearing casual and chef attire

So what’s the deal with nixtamalization? It’s when corn is cooked with water and lime (aka “cal”) to soften the kernels and unlock nutrients. The word comes from Nahuatl, nextli (lime ashes) + tamalli (cooked corn). All it takes is three ingredients: dried corn, lime powder (food-grade calcium hydroxide), and water.

Person using a traditional stone grinder to crush corn kernels, possibly for making masa or another preparation

👩‍🍳 How to make it at home — the easy way:

Various flatbreads on a large outdoor griddle, some with leaves or herbs embedded in the dough, cooking under natural light

1️⃣ Start with 1 kilogram of dried corn, about 2.2 pounds. In a large pot, mix 3 liters of water with 7 grams of lime powder (food-grade calcium hydroxide) and stir until dissolved. Add the corn, bring to a gentle boil, then simmer for about 45 minutes. You’ll see the kernels brighten and their skins loosen.

Bowls of various corn kernels on a wooden table, including red and yellow corn, showcased in a sunlit setting

2️⃣ Turn off the heat and let the corn soak overnight (about 18 hours) in the pot. The next day, rinse thoroughly, rubbing off any remaining husks. And that's how you get nixtamal!

A clay bowl filled with a creamy soup featuring corn and beans, placed on a wooden table

3️⃣ Now, grind the corn into a smooth, slightly sticky dough known as masa. A grain grinder or processor works great (traditionally, a metate is used). If it’s too thick, add a little bit of water. Roll the dough into golf-ball-sized portions and press into 6–8-inch tortillas. You can use a tortilla press or a rolling pin!

4️⃣ Finally, cook on a hot comal (or skillet) for 30–45 seconds per side until they puff and get those golden-brown spots.

You’ve just made tortillas the OG way. 🌮 Throw some cheese on the tortilla to make a quesadilla, or grilled meat and guacamole to make a delicious and authentic taco.

Taco with charred meat and herbs on a decorative plate, placed on a woven mat beside cutlery and a bowl

For tons of other authentic Mexican recipes, download the free Tasty app to explore our entire library — no subscription required!

Close-up of marinated, grilled meat slices stacked in layers, showcasing a juicy and savory texture