Low FODMAP at Mexican Restaurants

Carne asada plate with plain rice

Grilled steak is naturally FODMAP-free and a plate format lets you swap every risky side. The main variable is the marinade, which often contains garlic.

💬 Order it: Ask for the steak grilled with just salt, pepper, and lime — no garlic marinade. Swap Mexican rice (usually simmered in onion-garlic tomato broth) for plain white rice, and skip the beans.

Grilled shrimp or chicken salad

Lettuce, tomato, bell pepper, a little avocado, and grilled protein are all safe territory; the dangers are creamy dressings, tortilla-strip toppings from flour, and pre-seasoned meat.

💬 Order it: Ask for the protein simply grilled, no beans or crispy onions, dressing off — use oil and fresh lime instead. A sprinkle of cheddar or Monterey Jack is fine; skip the ranch and chipotle crema.

Grilled fish tacos on corn tortillas

Grilled fish, cabbage, lime, and 100% corn tortillas are a naturally low-FODMAP combination; the risk sits in the seasoning rub and the white sauce, which is usually garlicky crema.

💬 Order it: Confirm the fish is grilled (not battered — batter means wheat) and ask what's in the seasoning. Get the crema and salsa on the side and dress with lime and a plain vinegar-based hot sauce.

Street tacos (carne asada or carnitas) on corn tortillas

The classic street format — small corn tortillas, meat, cilantro, lime — is close to safe out of the gate; diced raw onion on top and garlic in the meat seasoning are the two fixable problems.

💬 Order it: Order them 'sin cebolla' (no onion), keep the cilantro and lime, and ask whether the meat is cooked with garlic or onion. Carnitas is often just pork, salt, and citrus — worth asking.

Chicken fajitas, no onions

Sizzling chicken and bell peppers is a solid base, but fajitas are onion-forward by design and the meat usually sits in a garlic marinade, so this pick depends on kitchen flexibility.

💬 Order it: Ask for peppers only (no onion) and the chicken seasoned simply. Request corn tortillas instead of the default flour, and build with cheese, a little guacamole, and tomato — skip the beans and salsa.

Chips with fresh guacamole

Fried corn tortilla chips are low FODMAP, and guacamole's core (avocado, lime, cilantro, tomato) is workable in a modest serving — but avocado is portion-limited for polyols and most guac has raw onion and sometimes garlic mixed in.

💬 Order it: Ask if the guacamole is made to order without onion and garlic (table-side guac spots can usually do this). Keep your share to a few tablespoons and let the table finish the rest.

Enchiladas (red or green sauce)

The sauce is the dish, and both red and green enchilada sauces are built on blended onion and garlic, then the whole thing is smothered in cheese and crema. Some kitchens also roll them in flour tortillas.

Burrito

A giant flour tortilla is a large dose of wheat fructans before you add anything, and the standard build stacks refried or black beans, onion-garlic rice, and salsa inside one package.

Refried beans (side or dip)

Beans are concentrated GOS on their own, and restaurant refried beans are almost always cooked down with onion and garlic — a triple hit that also rides along silently on most combo plates.

Margarita (house mix or 'skinny' with agave)

House margaritas lean on sweet-and-sour mix made with high-fructose corn syrup, and 'skinny' versions swap in agave nectar — one of the most fructose-dense sweeteners there is. Tequila itself is fine; the mixer is the problem.

Queso dip (chile con queso)

It reads as 'just cheese,' but queso is typically made with milk or cream (lactose, unlike aged hard cheeses) plus sauteed onion, garlic, and canned tomato-chile blends that contain both.