Peanuts are the most significant allergen risk for travelers in Cuba, and the one most underestimated by guidebooks. Cucuruchos de maní — small paper cones of roasted peanuts — are sold by street vendors on virtually every major street in Havana and other cities. The vendors carry the peanuts in open bags, transfer them by hand, and handle cash and other items in the same session. In markets, at street food stalls, and in simpler restaurants, peanuts are a constant ambient presence.

Peanut oil (aceite de maní) is used in some Cuban cooking, though it’s less ubiquitous than in Southeast Asian cuisines. Peanut paste appears in some desserts and snacks. Peanut-containing confectionery (maní garapiñado — candied peanuts) is sold everywhere as a snack.

For travelers with severe peanut allergy: avoid all street food that could have been in contact with peanut vendors. At restaurants, ask explicitly about peanut oil in cooking and about whether the kitchen handles peanuts. Casa particulares are safer because you can brief the host directly. Avoid market snacks entirely unless you can verify preparation. Keep your epinephrine auto-injector immediately accessible — not in a bag, on your person.

Cuba is a Caribbean island with an extensive coastline. Shrimp (camarones), lobster (langosta), crab (cangrejo), and squid (calamar) appear on almost every paladar menu in coastal cities. Cross-contamination in Cuban restaurant kitchens — where multiple dishes are prepared in the same pans and cooking surfaces — is a real concern. A kitchen that does camarones al ajillo for one table and a chicken dish for another is typically using the same oil, the same pan, and the same utensils without formal cross-contamination protocols.

For shellfish-allergic travelers: stick to restaurants where you can clearly communicate your allergy and where the kitchen can genuinely separate your preparation. State restaurants are particularly risky — staff training is lower, communication is harder, and kitchen protocols are less likely to be followed. Better paladares, casa particular meals, and hotel restaurants offer more reliable accommodation. Always ask whether the oil has been used for shellfish.

Cuban cuisine’s natural foundation — rice, black beans, plantains, yuca, malanga, root vegetables, meat — is largely gluten-free. This is genuinely good news for celiac travelers, who can eat most of a traditional Cuban meal without encountering wheat. The risks come from specific preparations: croquetas (made with béchamel and breadcrumbs), certain sauces thickened with flour, fried items that share oil with breaded foods, and imported packaged foods with undisclosed additives.

The bigger challenge is cross-contamination. Cuba doesn’t have a celiac-aware food culture, and the concept of dedicated gluten-free preparation surfaces isn’t something most kitchens manage. Eating at casas particulares, where you can communicate directly with the cook, is significantly safer than a busy paladar kitchen. Stick to simple preparations — grilled fish, rice, beans, plantains, avocado — and avoid anything battered, breaded, or involving a sauce whose ingredients you haven’t confirmed.

Traditional Cuban cooking doesn’t use dairy extensively — the cuisine was shaped by economic and supply conditions that didn’t include abundant milk, cream, or butter. The staples (rice, beans, plantains, pork, fish) are essentially dairy-free. Where dairy appears: desserts (flan, ice cream, certain cakes), croquetas de queso (cheese croquettes), some imported or hotel-prepared sauces, and increasingly at tourist-facing restaurants that have introduced continental-style cooking.

The main risk for dairy-allergic travelers is desserts and hotel buffet items where ingredients may not be disclosed. At simpler paladares and casas, the dairy risk is relatively low if you avoid obvious dairy items. UHT milk is used in coffee (café con leche) — request black coffee (café negro) if dairy is an issue. Ask specifically about butter in any grilled or sautéed dish, as some tourist-oriented kitchens have started using it.

Eggs are used in several Cuban preparations that aren’t immediately obvious: croquetas (the binding agent), some fritter batters, certain sauces, and the tamale masa in some regional variations. They’re also the standard protein at casa breakfasts, which means communicating your egg allergy on arrival at any casa you’re staying in is essential.

Egg allergy in Cuba is manageable but requires proactive communication. The safest eating is at casas where you’ve briefed the host, at paladares where you can have a detailed conversation about the menu, and at situations where you’re eating clearly egg-free foods (rice, beans, grilled fish, plantains). Watch particularly for anything described as “rebozado” (battered), which typically involves egg wash.

Lard (manteca de cerdo — rendered pork fat) is a standard cooking fat in Cuban kitchens, particularly at state restaurants, smaller paladares, and any establishment that isn’t specifically catering to tourist dietary needs. This is the hidden allergen that catches the most people off guard, including travelers with religious dietary restrictions that prohibit pork. A dish can appear completely meat-free while having been cooked in lard throughout.

The risks are most significant in: bean soups and stews (commonly made with pork bone or lard as the base flavoring), fried items (tostones, plantains, fritters at simpler establishments), and sofrito — the aromatic base for many Cuban dishes that is sometimes made with lard instead of vegetable oil. At mid-range and upscale paladares in Havana, vegetable oil is more commonly used. At state restaurants and simpler spots, assume lard unless confirmed otherwise.

Traditional Cuban cooking uses very few tree nuts — almonds, cashews, walnuts, and related ingredients are not part of the standard Cuban culinary tradition. The risk increases at tourist-oriented restaurants that have introduced international or Mediterranean-influenced dishes, hotel restaurants with imported goods, and any imported confectionery or packaged food.

Important distinction: peanuts are classified separately from tree nuts and represent a significantly higher risk in Cuba (see above). Travelers with peanut allergy who are also tree nut-allergic should treat both risks seriously. For those with tree nut allergy only, Cuba’s traditional food landscape is one of the lower-risk environments in the Caribbean — but hotel restaurants, fusion paladares, and any imported food products warrant the standard verification.