The hosts who handle dietary needs well at catered events do four things: they collect specific information early through the RSVP, they separate true allergies from preferences, they hand their caterer a precise written brief, and they label and serve the food honestly instead of making promises nobody can keep. None of it requires medical knowledge. It requires asking better questions, writing the answers down and making sure the right people see them. This playbook gives you the RSVP wording, a caterer brief template, the exact questions to ask, labeling language that informs without overpromising, and a day-of communication plan, all grounded in guidance from the FDA, Food Allergy Research & Education (FARE), the American College of Allergy, Asthma & Immunology and the Celiac Disease Foundation.
Allergy, intolerance and preference are three different conversations
The word "dietary" covers needs with wildly different stakes. Lumping them together is how a guest with a serious allergy ends up on the same sticky note as someone who'd rather skip cilantro. Sort every answer you collect into one of these groups.
| Type of need | What it generally means | Stakes at your event | What the host should do |
|---|---|---|---|
| Food allergy | An immune reaction to a specific food protein | Can be severe; trace amounts may matter | Get specifics, brief the caterer, plan service carefully |
| Celiac disease | An autoimmune condition triggered by gluten | Strict avoidance; cross-contact matters | Treat like an allergy for planning purposes |
| Intolerance or sensitivity | Digestive discomfort from a food | Unpleasant, generally not life-threatening | Offer clear choices and ingredient info |
| Medical diet | Diabetes, low-sodium, pregnancy and similar | Varies by guest | Offer information and flexible components |
| Ethical or religious practice | Vegetarian, vegan, halal, kosher, no pork | Personal and important | Plan a real dish, not an afterthought |
| Preference | Dislikes, spice tolerance | Comfort | Sauces on the side, a mild option |
ACAAI notes that most food-allergy symptoms occur within two hours of eating and often start within minutes, that the primary way to manage a food allergy is to avoid the food, and that epinephrine is the first-line treatment for anaphylaxis. It also distinguishes intolerances, which can mimic allergy symptoms, from allergies. You don't need to diagnose anyone. You only need to know which group each guest belongs to so you can give each need the right level of care.
The nine major allergens, and where they can hide in party food
According to the FDA, the major food allergens in the United States are milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame. Sesame became the ninth through the FASTER Act, effective January 1, 2023.
There's an important nuance for hosts. The FDA explains that most foods sold at food service establishments without a prepackaged label are excluded from its allergen labeling requirements. In plain terms, food set out on a catered buffet usually doesn't arrive with a legally required ingredient label. The information exists only if someone asks for it and writes it down. That someone is you.
The table below lists general places these allergens can turn up in event food, including Mexican-inspired spreads. These are common examples to ask about, not a description of any particular caterer's menu.
| Allergen | Where it can turn up in event food |
|---|---|
| Milk | Crema, cheeses, butter in breads and baked goods, creamy dressings and sauces |
| Eggs | Baked goods and batters, mayonnaise-style sauces, some desserts |
| Fish | Ceviche, some seafood stocks, sauces made with anchovy |
| Crustacean shellfish | Shrimp in ceviche or cocktails, some broths and stuffed dishes |
| Tree nuts | Some moles and pastries, almond-based drinks, nut garnishes |
| Peanuts | Some moles and chile-peanut salsas, desserts and candies |
| Wheat | Flour tortillas, breads, many cornbread recipes, sauces thickened with flour |
| Soybeans | Soy sauce in marinades, some oils, plant-based proteins |
| Sesame | Mole recipes that call for sesame seeds, buns, seeded garnishes, tahini |
Two items from the Mexican Ragdoll kitchen deserve a direct note here because they are the business's known specialties. Ceviche is generally made with fish, shellfish or both, so it belongs at the center of any allergen conversation. And cornbread is a reminder that a dish's name tells you little: many cornbread recipes include wheat flour, milk, butter and eggs alongside the cornmeal. Ask for the actual ingredients of any version you're serving, including the jalapeño-honey one, rather than assuming.
Collecting dietary needs through your RSVP
Most hosts ask, "Any dietary restrictions?" That question tends to produce jokes, blank fields and the occasional "no mushrooms please," while missing the guest who has a tree nut allergy and carries epinephrine. Ask once, ask specifically, and give people a way to tell you more.
Fields for a digital RSVP
- Will you be joining us? (Yes / No / Maybe, with a follow-up date)
- Number in your party, including children
- Food allergies in your party: checkboxes for milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soy and sesame, plus an "other" field
- How serious is the reaction? (Mild / Serious / Severe, carries epinephrine)
- Is even a trace or shared utensil a problem? (Yes / No / Not sure)
- Other needs: celiac disease, vegetarian, vegan, halal, kosher, no pork, pregnancy, other
- May we contact you to talk through the menu? (Yes, plus best phone or email)
Wording for a paper card or a text invitation
When a full form isn't practical, a single sentence does the job better than a vague question:
"If anyone in your party has a food allergy, celiac disease or another dietary need, please tell us what it is and how serious it is. We'll share the details with our caterer and follow up with you personally."
Follow up on anything marked serious
For every guest who reports a serious allergy or celiac disease, send a short, warm personal message. Ask which foods they avoid, whether shared serving utensils are a concern, whether they'd like a separately plated meal, and whether they plan to bring their own food. FARE's guidance for people with food allergies encourages them to communicate their needs to the host ahead of time and to bring a safe meal if they're unsure, so don't be offended if a guest chooses to do that. It's a sensible habit, not a verdict on your party.
Keep it private
Health information should travel only as far as it needs to. Share tallies and needs with your caterer, and share names only when a specific plate is being prepared for a specific person.
From RSVP answers to a one-page caterer brief
Raw RSVP data is messy. Before you talk to your caterer, distill it into a single page they can read in two minutes. Send it during the quote stage, while the menu is still flexible, and update it when you give your final headcount.
What the brief should include
- Event date, city, start time and service style (drop-off, buffet, staffed)
- Total guests and number of children
- Each allergy, with the number of guests affected and severity
- Whether any guest is sensitive to cross-contact or shared utensils
- Celiac disease and other medical diets
- Vegetarian, vegan and religious needs, with counts
- Guests who will bring their own food
- Your on-site point person's name and phone number
A sample brief
| Need | Guests | Severity and notes |
|---|---|---|
| Tree nut allergy | 1 adult | Severe; carries epinephrine; shared utensils are a concern; would like a separately plated meal |
| Crustacean shellfish allergy | 1 adult | Serious; avoids any dish containing shrimp |
| Celiac disease | 1 adult | Strict; asks about shared preparation surfaces and sauces |
| Vegetarian | 4 adults | Eats dairy and eggs |
| Vegan | 1 adult | No animal products, including lard, chicken stock or honey |
| No pork | 6 guests | Religious practice |
| Mild spice preference | Several children | Salsas and chiles on the side, please |
With a brief like that, a caterer can tell you quickly what's straightforward, what needs a separate preparation and what they can't safely accommodate. That last answer matters as much as the others.
Questions to ask your caterer, word for word
Use these as written. They're designed to get concrete answers rather than reassurance.
Ingredients
- "Can you give me a full ingredient list for each dish, including sauces, marinades, oils, rubs and garnishes?"
- "Which of the nine major allergens are in each dish?"
- "Do any dishes use purchased components, such as tortillas, spice blends or sauces, and can you share those labels?"
Preparation and cross-contact
- "Are any dishes prepared on shared surfaces or with shared equipment alongside an allergen on my list?"
- "If you make a separate version for one guest, how is it kept apart during preparation, transport and service?"
- "Is anything fried in shared oil?"
Service and labeling
- "Will you provide labels or ingredient cards for each dish, and can I review the wording beforehand?"
- "How many serving utensils will each dish have, and will someone watch the line?"
- "Can a guest's plate be prepared first, covered and labeled with their name?"
Changes and limits
- "If an ingredient has to be substituted at the last minute, how will I be told?"
- "Which of these needs can you not accommodate safely?"
- "Which dishes should a guest with a severe allergy simply skip?"
A caterer who answers question 11 candidly is doing you a favor. The goal is accurate information that lets each guest make their own decisions, not a promise that everything is fine.
Labels that inform without overpromising
Buffet cards are where good intentions turn into risky claims. "Allergen-free," "safe for allergies" and "nut-free" are promises about what is absent, and with shared kitchens, shared transport and shared serving tables, few hosts or caterers can stand behind them. Describe what's in the dish instead.
Gluten-free deserves particular care
The FDA has set a limit of less than 20 parts per million of gluten for foods labeled gluten-free, and it says restaurants making gluten-free claims on their menus should be consistent with that definition. A handwritten "GF" on a tent card is effectively that claim. Unless your caterer confirms it, write the ingredients and mention shared preparation instead, and let guests with celiac disease ask follow-up questions.
What a good label includes
- The dish name in large, legible type
- A one-line description
- A "Contains:" line listing any of the nine major allergens present
- Any other ingredients your guests flagged, such as pork, lard, alcohol or honey
- A preparation note when relevant, for example "prepared in a kitchen that also handles tree nuts"
- Placement directly in front of the dish, not on a sign across the room
Example cards
- Mexican cornbread, jalapeño-honey. Contains: [the allergens your caterer confirms, which commonly include wheat, milk and eggs in cornbread]. Includes honey.
- Ceviche. Contains: fish [and crustacean shellfish, if used]. Note whether the seafood is raw and citrus-cured or cooked before marinating, because the FDA lists ceviche among raw or undercooked seafood foods that higher-risk guests should avoid.
- A vegetarian dish. Contains: [confirmed allergens]. Note whether it's also vegan, and confirm there's no lard or meat stock.
Bracketed text is a reminder to fill in only what your caterer confirms. Keep a printed sheet with the full ingredient lists at the end of the table or with your point person for guests who want more detail.
Serving layouts that limit cross-contact
FARE defines cross-contact as what happens when one food comes into contact with another and their proteins mix. Its guidance makes three points every host should remember. Even a trace amount on a spoon that nobody can see can cause a reaction. Ladles and tongs are easily put back in the wrong dish. And cooking does not remove allergens. A buffet line is a perfect machine for exactly this kind of accident, so arrange it on purpose.
- One utensil per dish, with spares. Keep extra clean utensils nearby so a dropped spoon gets replaced rather than borrowed from the next pan.
- Put the riskiest items last or apart. Nut or sesame garnishes, crumbly toppings and shellfish dishes belong at the end of the line or on a small separate table, so they aren't reached across.
- Serve toppings in their own bowls. Pre-sprinkled garnishes make a whole dish off-limits. A garnish bar lets everyone choose.
- Plate first for the highest-risk guests. A meal prepared separately, covered and labeled with the guest's name, then set aside before the line opens, avoids the whole problem.
- Consider a staffed line. When a server portions the food, utensils stay where they belong. For events with several serious allergies, a few hours of help can be worth more than any decorative upgrade.
- Keep ceviche cold, separate and clearly marked. Seafood is an allergen and a temperature-sensitive dish. It should be held cold on ice and positioned so it isn't dripped over other food.
- Watch the children's area. Kids reach, share and swap. If a child guest has an allergy, talk with their parents about how they'd like snacks and desserts handled.
The day-of communication plan
Information collected weeks ago is only useful if it reaches the right people on the day. Build a short plan and assign it to someone who is not the host, because the host will be pulled in twenty directions.
Roles
- Point person: holds the brief, knows which guests have serious needs, introduces themselves to those guests and to the catering lead.
- Catering lead: confirms the labels, the separate plates and the utensil setup before service opens.
- Host: welcomes guests and directs any food questions to the point person.
A five-minute huddle before service
Walk the table with the catering lead. Check every label against the brief. Confirm where any separately prepared plates are and who will hand them over. Make sure a printed ingredient sheet is on hand.
If someone has a reaction
Guests with known severe allergies usually carry their own medication, and FARE advises carrying epinephrine at all times, ideally two auto-injectors. FARE's response guidance says that for severe symptoms, epinephrine should be given immediately and 911 called, and ACAAI describes epinephrine as the only medication that can reverse the life-threatening symptoms of anaphylaxis. Your role as host is practical: know the exact address of your event for a 911 call, which matters at parks, beaches and large properties where a street address isn't obvious, and keep a clear path for responders. Follow the guest's own emergency plan if they have one.
A countdown for dietary planning
| When | What to do |
|---|---|
| With invitations | Include specific RSVP questions |
| As RSVPs arrive | Follow up personally on serious allergies and celiac disease |
| During the quote | Send your caterer the one-page brief and ask the twelve questions |
| At final headcount | Update the brief and confirm any separate plates |
| Two days before | Approve label wording and print the ingredient sheet |
| Event day | Huddle, check labels, plate high-risk meals first |
| Afterward | Ask allergic guests how it went, and note anything to improve next time |
Situations that deserve extra thought
Celiac disease and gluten
The Celiac Disease Foundation suggests asking about separate or cleaned preparation spaces, clean or separate cookware, grill cleaning and whether fryer oil is shared. It also warns that gluten hides in gravies, sauces, marinades, spice blends and drinks. Corn tortillas are a natural starting point for Mexican food, but cross-contact during preparation and service still matters, so ask how they're handled.
Vegetarian and vegan guests
In Mexican cooking, two classic details catch people out: refried beans are traditionally made with lard, and rice is often cooked in chicken broth. Ask about both. Then make sure vegetarian guests get a satisfying dish of their own rather than a plate of sides.
Religious and cultural practices
No pork, no beef, halal and kosher observance, and meatless Fridays during Lent are common needs. Ask guests what they observe rather than guessing, and pass the specifics to your caterer. Some needs, such as certified kosher food, may require a specialized provider, and that's worth knowing early.
Pregnancy and higher-risk guests
The FDA advises that pregnant people, young children, older adults and people with weakened immune systems avoid raw or undercooked seafood, and it names ceviche among the examples. Label how the ceviche is prepared so these guests can decide for themselves, and keep every perishable dish at safe temperatures.
Medical diets
For guests managing diabetes or sodium, the most helpful moves are simple: sauces and dressings on the side, a vegetable-forward option and ingredient information available on request.
Planning dietary needs with Mexican Ragdoll
When you plan with Mexican Ragdoll, the dietary conversation happens during the quote, directly with Monica, who brings 25 years of restaurant experience to the table. Share your one-page brief when you first describe the event and ask her plainly what she can work with and what she can't. That candor is the point: the aim is honest answers about ingredients and preparation, not a blanket promise that food is free of any allergen.
The known specialties are ceviche and Mexican cornbread, including a jalapeño-honey version. Everything else on the menu page is shaped around your event through a custom quote, which makes it easier to plan around specific needs from the start. Ceviche is offered only where it can be kept properly cold from preparation to serving. The signature cart has no refrigeration, so raw seafood never sits out on it.
You can explore every format on the catering overview, from Monica's Table for private parties to Workday Fiesta for office lunches, where mixed dietary needs are the norm rather than the exception.
Your inquiry, with date, city and guest count, starts a personal follow-up. A quote or configured package follows, and any deposit is paid by secure online checkout. Monica then confirms the date herself. Neither an inquiry nor a payment confirms anything automatically.
Before you book any caterer, it's worth reading our list of questions to ask before booking a caterer. If your event is outdoors, our guide to outdoor event food planning on the coast covers heat, wind and keeping cold food cold. Start with the RSVP questions above. Everything else in this playbook gets easier once you know exactly who is coming and what they need.