10 Common Mistakes When Cooking Mexican Food

Cooking Mexican food has its tricks, and it's completely normal to make mistakes at first. At Recetas Mexas we've seen (and made) all of these slip-ups, so we're sharing them to make your learning curve faster. Avoid these ten mistakes and your Mexican dishes will improve dramatically from day one.

1. Serving Cold Tortillas

The mistake: taking the tortillas out of the packet and putting them straight on the plate, cold and rigid. It's the equivalent of serving uncooked pasta — technically edible, but a sad experience.

The fix: always warm the tortillas before serving. You have three options:

• Dry pan (the best): 30-40 seconds a side in a hot pan with no oil. They turn flexible with slightly golden spots.
• Comal: if you have one, it's the traditional way. Same time as the pan.
• Microwave (emergency): wrap a couple in damp kitchen paper, 20-30 seconds. Not ideal but better than cold.

Pro tip: wrap the warm tortillas in a clean tea towel to keep them warm throughout the meal. A tortilla warmer (£8-12 on Amazon or in Latin shops) is an investment well worth making.

2. Burning the Dried Chiles

The mistake: toasting the dried chiles until they're black, thinking "more toasted = more flavor".

The fix: toasting chiles should be brief and gentle. In a dry pan over a medium heat, 20-30 seconds a side. You'll know they're ready when they change color slightly and release a fragrant aroma. If they smell acrid or bitter, you've burnt them and the salsa will be bitter.

Warning sign: if they start to smoke a lot, remove them immediately. Burnt chile ruins a whole salsa and there's no way to fix it. Better to undercook than overcook.

3. Not Soaking the Chiles Enough

The mistake: putting the dried chiles in the blender after a quick 5-minute soak, resulting in a grainy, lumpy salsa.

The fix: after toasting them, soak the chiles in hot (not boiling) water for a minimum of 15-20 minutes. They should be completely flexible — you can check by cutting one: it should be soft inside.

Trick: keep some of the soaking water. It tastes of chile and you can use it to adjust the consistency of the salsa when blending. Add it gradually until you reach the texture you want.

4. Salsas That Aren't Strained

The mistake: blending the dried-chile salsa and serving it straight away without straining. The result is a salsa with a rough texture, bits of skin and seeds.

The fix: always pass dried-chile salsas through a fine sieve. Press with a spoon to extract all the flavor. What's left in the sieve are skins and seeds that ruin the texture.

Exception: molcajete (mortar) salsas aren't strained. Their rustic texture is part of the charm. But blended salsas, yes.

Tip: after straining, fry the salsa in a tablespoon of hot oil for 5 minutes. This step (called "refrying") concentrates the flavors and gives it incredible depth. It's the difference between a home-made salsa and a restaurant one.

5. Flavourless Beans

The mistake: boiling beans with just water and salt. The result is bland pulses that add nothing to the dish.

The fix: beans need friends in the pot. Add from the start:

• 1/4 white onion
• 2 whole cloves of garlic
• 1 sprig of epazote (if you can find it) or a bay leaf
• A teaspoon of lard or olive oil

Important: the salt is added at the end, when the beans are already soft. If you put it in at the start, the bean skin hardens and they take twice as long to cook. This is a classic mistake many people make.

For refried beans: fry chopped onion in lard, add the cooked beans with a little of their cooking liquid and mash with a fork. The liquid is key to the creamy texture. See our refried beans recipe for the complete step by step.

6. Guacamole That Goes Brown

The mistake: making the guacamole an hour ahead and discovering it's turned brown and unappetising when the guests arrive.

The fix: guacamole is made just before serving, full stop. If you need to prepare things in advance, leave the ingredients chopped and ready, but don't mash the avocado until the last moment.

If there's no other option: cover the surface of the guacamole with cling film touching the surface directly (no air gap). Contact with air is what causes the browning. Some people put the avocado stone on top, but this is more myth than reality — it only protects the area directly under the stone.

Restaurant trick: add a little more lime juice than the recipe says. The citric acid significantly delays the browning.

7. Sticky Red Rice

The mistake: cooking Mexican rice as if it were white rice: straight into the water and that's it.

The fix: Mexican red rice requires two essential preliminary steps:

1. Rinse: rinse the rice under the tap until the water runs clear. This removes the starch that causes stickiness.
2. Toast: fry the rice in hot oil until golden (5-7 minutes, stirring constantly). This seals the grain and stops it breaking during cooking.

Then add the tomato stock, bring to the boil, lower the heat to minimum, cover and do NOT lift the lid for 18-20 minutes. Resisting the temptation to lift the lid is crucial — every time you do, the steam that cooks the rice escapes.

8. Using the Wrong Spices

The mistake: throwing in curry powder, sweet paprika or excess cumin thinking "it's all the same". Or worse: using the supermarket taco spice kit that has more colouring than flavor.

The fix: Mexican cooking uses few spices but uses them well. The essentials are:

• Cumin: in moderation. It's potent and can dominate any dish.
• Oregano: preferably Mexican, but Mediterranean works in a smaller quantity.
• Cinnamon: yes, cinnamon — it's used in moles and some adobos.
• Clove: a pinch in moles and adobos. Never more than 2-3 cloves per recipe.

The secret of Mexican cooking isn't in the spices but in the techniques: toasting, roasting, soaking, blending. The flavor comes from the chiles, the roasted tomatoes, the charred onion and the golden garlic.

9. Not Roasting the Tomatoes

The mistake: using raw tomatoes straight from the packet to make red salsa.

The fix: in Mexican cooking, tomatoes are almost always roasted before blending for salsa. You can do this in several ways:

• Comal/dry pan: whole tomatoes until the skin darkens and blisters (10-15 min, turning).
• Oven: under a high grill, 10-12 minutes.
• Pan with a little oil: cut the tomatoes in half, cut-side down, until well browned.

Roasting caramelizes the tomato's sugars and gives it that depth of flavor that distinguishes an authentic Mexican salsa from a tomato paste with chile. This simple step changes everything.

10. Misjudging the Heat

The mistake: adding all the chile the recipe says without tasting, and ending up with a dish no one can eat. Or, conversely, leaving out the chile completely and serving Mexican food with no character at all.

The fix: the heat is added gradually and tasted. Start with half what the recipe says and build up. Remember that:

• The heat intensifies with cooking.
• The seeds and veins of the chile are the spiciest part — remove them if you want less heat.
• Different chiles have different levels: jalapeño is medium, serrano is strong, habanero is very strong.

If you've overdone the heat: add a little sugar, honey or cream. Dairy (cream, cheese) neutralises capsaicin better than water. Serving with white rice also helps to balance.

Bonus: The Most Common Mistake of All

Thinking that Mexican food is just tacos and burritos. Mexican cooking is Intangible Cultural Heritage by UNESCO and has incredible diversity: moles with more than 30 ingredients, coastal ceviches, tamales in a thousand forms, soups like pozole, snacks like sopes and huaraches... Explore our recipe catalogue and discover dishes you'd probably never considered.

Which of these mistakes have you made? Don't worry, we've all been there. The important thing is to learn and keep cooking. And if you need authentic ingredients, check our guide to Mexican shops in the US.

The Path to Authenticity

Avoiding these mistakes is the first step, but achieving authenticity in Mexican cooking requires something more: understanding the philosophy behind each dish.

Less is more (when it comes to fresh ingredients)

A mistake we didn't mention above but that's crucial: over-complicating recipes. The best tacos in the world have just three things: good meat, a good tortilla and good salsa. You don't need 15 toppings or molecular cooking techniques. Mexican cooking shines when quality ingredients speak for themselves. Respect the simplicity of a good carne asada taco with onion, cilantro and a green salsa.

Practice makes perfect

Don't be discouraged if your first mole doesn't taste like a Mexican grandmother's. Mexican cooking has centuries of tradition and every cook has perfected their recipes over decades. Make the same recipe three times before judging the result. By the second time you'll already notice an improvement, and by the third you'll be surprised how far you've come.

Keep refining your technique with our detailed step-by-step recipes. Missing an ingredient? Find it in the Mexican shops in the US.