🛡️ Allergen Safety Resource — New York & Los Angeles

How to Dine Out Safely
When Allergens Are a Real Risk

Over 32 million Americans live with food allergies. Eating out shouldn't feel like a gamble. This guide covers the Top 9 allergens, what questions to ask restaurants in NYC and LA, and how to read preparation transparency signals before you ever sit down.

32M
Americans with
food allergies
200K
ER visits per year
from reactions
Top 9
FDA-mandated
major allergens
Join DineIQ — See Allergen Prep Before You Order →

The FDA's Top 9 Major Allergens

The FASTER Act of 2021 expanded the original "Big 8" to nine. Every packaged food sold in the US must declare these. Restaurants are not federally required to label allergens — but increasingly must under state law, and consumer pressure is rapidly changing industry norms.

🥛

Milk (Dairy)

High prevalence

Hidden in butter, cream sauces, baked goods, marinades, and many "non-dairy" creamers. Restaurants share cookware with dairy dishes — cross-contact risk is very high.

Ask: "Is your grill or flat-top used for anything containing butter or cheese?"
🥚

Eggs

High prevalence

Found in pasta, breading, salad dressings (Caesar, mayo-based), baked goods, and egg washes. "Vegan" options at restaurants often still involve shared prep surfaces.

Ask: "Are your pasta and breading egg-free, and are they prepped separately?"
🐟

Fish

Severe reactions

Includes salmon, tuna, cod, halibut, anchovies, and more. Anchovies hide in Caesar dressing and Worcestershire sauce. Fish sauce is common in Asian cuisines.

Ask: "Does your Caesar dressing or any sauces contain anchovies or fish sauce?"
🦐

Shellfish

Most fatal reactions

Shrimp, crab, lobster, clams, oysters, scallops, and mussels. Shellfish allergies cause more fatal anaphylaxis than any other allergen. Fryer cross-contact is a major risk at seafood restaurants.

Ask: "Do you use dedicated fryers for non-shellfish items, or does everything share the same oil?"
🌰

Tree Nuts

Severe & lifelong

Almonds, cashews, walnuts, pistachios, pecans, hazelnuts, and more. Each is a distinct allergen. Pesto, desserts, and Asian dishes frequently contain tree nuts without obvious labeling.

Ask: "Which specific tree nuts are used in your kitchen, and are desserts made in a shared space?"
🥜

Peanuts

Most common fatal

A legume, not a tree nut — but equally dangerous. Widespread in Asian cuisine, African dishes, sauces, and shared cooking oils. Peanut dust in the air can trigger reactions in highly sensitive individuals.

Ask: "Do you cook with peanut oil, and is any peanut prep done in the open kitchen?"
🌾

Wheat

Ubiquitous

Flour, soy sauce (most brands contain wheat), breading, pasta, thickeners, and gravies. "Gluten-free" menu items don't automatically mean wheat-free in shared prep environments.

Ask: "Is your gluten-free pasta cooked in separate water, and does your soy sauce contain wheat?"
🫘

Soybeans

Often hidden

Soy sauce, edamame, tofu, miso, tempeh, and many marinades. Also hidden in processed meats as a filler. Many Asian restaurant dishes contain soy as a base ingredient.

Ask: "Are your marinades and sauces soy-free, and do you use tamari instead of soy sauce?"
🌿

Sesame

Newest addition

Added by the FASTER Act in 2023. Tahini, hummus, buns with sesame seeds, Asian dressings, and Middle Eastern cuisine. Sesame oil is highly concentrated and can trigger severe reactions.

Ask: "Does your bread, dressing, or any sauces contain sesame oil or tahini?"
🗽

Dining with Allergies in New York City

NYC has more than 27,000 active restaurants. The density, pace, and diversity of cuisines make allergen cross-contact more likely than almost anywhere in the US. Here's what you need to know.

What NYC Law Requires

  • ✓NYC Local Law 55 (2020) requires chain restaurants (15+ locations) to provide written allergen information upon request.
  • ✓All food service establishments must be able to identify major allergen ingredients in menu items.
  • ✓Health inspection criteria include proper allergen labeling and cross-contact prevention protocols.
  • ⚠Independent restaurants have no federal obligation to disclose allergens — you must ask directly.

NYC Health Score + Allergen Link

A restaurant's health inspection score is a proxy for kitchen discipline — which directly affects allergen safety. Look for:

  • ✓Grade A (0–13 points): Strong compliance culture — more likely to follow allergen protocols.
  • ⚠Grade B (14–27 points): Some violations present — ask about specific prep practices.
  • ✕Grade C (28+ points) or no grade posted: Avoid if your allergy is severe — kitchen discipline is in question.

10 Questions to Ask Any NYC Restaurant Before Ordering

❓ Can I speak to the chef or manager about a food allergy?
Never rely on front-of-house staff alone — insist on speaking to whoever manages the kitchen.
❓ Do you have a written allergen guide for your menu?
Chain restaurants (15+ locations) in NYC are legally required to provide one. Independents should have this on request.
❓ Are your dishes prepared in a shared kitchen with my allergen?
Cross-contact happens through shared surfaces, not just ingredients.
❓ Do your fryers share oil between allergen-free and allergen-containing items?
Fryer oil absorbs protein from everything cooked in it. Dedicated fryers matter.
❓ Is your 'gluten-free' pasta cooked in separate water?
Shared pasta water has been shown to transfer enough gluten to cause reactions.
❓ Are your sauces and marinades made in-house, or sourced from suppliers?
Supplier sauces often contain unexpected allergens — in-house preparation is easier to verify.
❓ How does your staff communicate allergen requests to the kitchen?
Look for a ticket system or written protocol — verbal-only communication fails.
❓ Has anyone else ordered with this allergy recently, and how did it go?
Not foolproof, but a good test of whether the kitchen has thought about this.
❓ Is there anything on my plate that touched a shared surface with my allergen?
Ask this after describing your order — it confirms the kitchen understood the request.
❓ If you're not sure about an ingredient, would you tell me?
The right answer is yes. If staff seem uncertain or pressured to reassure you, reconsider.
🌴

Dining with Allergies in Los Angeles

LA's food scene spans Korean BBQ, Japanese ramen, Thai street food, Mexican cuisine, and Michelin-starred tasting menus — all with distinct allergen profiles. The city's health grading system (90-100 = A) gives you a strong foundation for evaluating kitchen discipline.

What California Law Requires

  • ✓California AB 1775 (2023) requires restaurants with 15+ CA locations to provide allergen information on menus or via QR code.
  • ✓California Retail Food Code requires food handlers to understand allergen cross-contact and be trained accordingly.
  • ✓LA County health inspectors evaluate allergen-related handling violations as part of the inspection scoring.
  • ⚠Like NYC, independent restaurants are not required to proactively list allergens — always ask.

LA Health Score + Allergen Link

LA's scoring runs 0-100 (higher = better). A restaurant's score reflects its overall food safety compliance — a direct indicator of allergen discipline:

  • ✓90–100 (Grade A): Highest safety standards — most reliable for allergen requests.
  • ⚠80–89 (Grade B): Some compliance gaps — verify prep practices explicitly.
  • ✕Below 80 (Grade C): Multiple violations on record — use extreme caution if allergens are severe.

Allergen Hotspots in LA's Most Popular Cuisines

🍜 Korean BBQ
Sesame oil is foundational. Most marinades contain soy and garlic. Shared grill tables mean cross-contact is nearly unavoidable — call ahead for dedicated grill options.
🍱 Japanese / Sushi
Soy sauce (wheat + soy), sesame seeds, fish roe, shellfish. 'Sashimi only' diners often forget about the soy sauce dish placed automatically at every seat.
🌮 Mexican / Tacos
Dairy (cheese, crema, cotija), wheat (flour tortillas), and sometimes tree nuts in mole. Many LA taquerias fry in shared oil.
🍛 Thai
Peanuts, shellfish paste (shrimp paste in curry bases), fish sauce, and tree nuts are foundational — not optional garnishes.
🥗 Health-Forward / Vegan Cafés
Higher cross-contact awareness but not immune — tree nuts (cashew cream), sesame (tahini), and soy (tofu) are everywhere. 'Vegan' ≠ 'allergen-free.'
🍕 Italian / Pizza
Dairy, wheat, and eggs are the base of almost everything. Gluten-free crust is rarely made in a dedicated oven — ask specifically.

Cross-Contact: The Risk Most Diners Underestimate

An allergen-free dish can become dangerous through cross-contact — the transfer of allergen proteins from one food to another via shared surfaces, utensils, or cooking equipment. Understanding where this happens is the single most important thing an allergic diner can learn.

Where Cross-Contact Happens

🍳 Flat-top grills & woks
Every order cooked on a shared surface picks up residue from previous orders. High-volume kitchens rarely fully clean between tickets.
🛢️ Fryer oil
Proteins from every item fried in shared oil remain suspended — cross-contact is proven even when items don't look visibly contaminated.
🫙 Sauce spoons & ladles
Staff dip the same spoon into multiple sauces routinely. Dedicated spoons per sauce are rare in fast-moving kitchens.
✋ Hands & gloves
A glove change doesn't help if the prep surface isn't also changed. Hands that touched bread can contaminate a 'gluten-free' plate.
🥣 Shared pasta water
Wheat proteins dissolve into boiling water and transfer to gluten-free pasta cooked in the same pot.
🔪 Cutting boards & knives
Color-coded boards exist in some kitchens — many don't have them. Ask specifically whether allergen prep uses dedicated equipment.

Signals a Kitchen Takes Allergens Seriously

🏆 Grade A health score
The highest correlation with kitchen discipline and protocol-following.
📋 Written allergen policy on request
Shows the kitchen has thought through the issue systematically, not just reactively.
👨‍🍳 Chef or manager available to discuss
Front-of-house can't answer prep questions. A kitchen that empowers staff to flag allergy orders is safer.
🔵 Allergen ticket system
Formal written tickets that travel with the order are far safer than verbal communication alone.
🚫 Dedicated fryers for specific diets
Many better kitchens have a designated fryer for gluten-free or shellfish-free orders — a gold standard.
✅ 'I'm not sure, let me check' response
The most reassuring answer a server can give. Confident 'yes, it's fine' answers without verification are a red flag.

Frequently Asked Questions

Are restaurants in NYC and LA legally required to disclose allergens? ▼
Chain restaurants (15+ locations) in NYC and California are required to provide allergen information on request. Independent restaurants are not federally required to proactively disclose allergens — but all food handlers are trained under state food safety codes to understand cross-contact. Always ask directly and specifically, regardless of restaurant type.
What's the difference between a food allergy and a food intolerance? ▼
A food allergy involves an immune system response that can escalate to anaphylaxis — potentially life-threatening within minutes. A food intolerance (like lactose intolerance) causes digestive discomfort but is not life-threatening. If you have a true allergy, always communicate it clearly to restaurant staff as a medical condition, not a preference.
Does a high health score mean a restaurant is safe for allergens? ▼
A high score is the best proxy available — it reflects kitchen discipline, hygiene, and protocol-following. But health inspections don't specifically evaluate allergen prep in most jurisdictions. A Grade A restaurant is more likely to follow allergen protocols, but you should still ask specific cross-contact questions.
What should I do if I have a reaction at a restaurant? ▼
Use your epinephrine auto-injector (EpiPen) immediately if prescribed and call 911. Inform restaurant management. After the emergency is resolved, file a complaint with NYC's 311 or LA County's Environmental Health department — this creates a record and triggers re-inspection. Document what you ate and the timeline.
Is 'gluten-free' the same as 'wheat-free' at a restaurant? ▼
Not necessarily. A dish can be prepared without gluten-containing ingredients but still be contaminated through shared pasta water, shared cutting boards, or shared fryer oil. Always clarify with the specific question: 'Is this item prepared in a dedicated gluten-free environment, or is there shared equipment?'
How does DineIQ help with allergen safety? ▼
DineIQ surfaces restaurant health inspection scores, staffing adequacy signals, and — for DineIQ Verified restaurants — explicit allergen preparation details before you order or visit. Instead of calling ahead or hoping your server knows the answer, you can see a restaurant's allergen posture in the app before you even walk in the door.

Know Before You Go

DineIQ brings health inspection scores, staffing signals, and allergen preparation details together in one place — so every dining decision starts with real information.

Join the DineIQ Waitlist → NYC Health Score Guide LA Health Score Guide