Guide

Allergen Management in a Shared Commercial Kitchen

Allergen safety is a team effort in a shared kitchen. Learn how to assess risk, separate, clean and communicate.

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Commercial kitchen with stainless steel dishwashing equipment and metal shelving units for allergen management in a shared kitchen

To manage allergens in a shared kitchen, identify the major allergens in your products and in other tenants’ work, assess where cross-contact could occur, separate storage and equipment, clean thoroughly between uses, label accurately and communicate with the operator and other tenants. The nine major U.S. allergens are milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans and sesame.

Major allergens (US)Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans, sesame

Core controlsAssess, separate, clean, label, communicate

Highest riskShared equipment and surfaces

Strictest needPrivate kitchen for allergen-free claims

RecordsAllergen matrix and cleaning logs

Why shared kitchens need allergen controls

Many businesses use the same space, and each may handle different allergens. Traces can move through shared equipment, surfaces, hands and air. For someone with a serious allergy, a tiny amount can cause a reaction.

Every tenant therefore has a duty to understand and control allergens, and operators set rules to help.

Team of cooks preparing food in a large kitchen for allergen management in a shared kitchen

Know the major allergens

In the United States the nine major food allergens are milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans and sesame. Labels must declare them. Other ingredients can also cause reactions, so ask customers what matters to them.

See food allergy for background and check FDA guidance.

Communicating with other tenants and your customers

Tell the operator about the allergens you handle, ask which allergens other tenants use, and agree on schedules and cleaning standards. On labels and menus, state which allergens are in the product and whether there is a risk of cross-contact. Customers with allergies depend on accurate information, so update labels whenever recipes change.

Communicate with the operator and tenants

Tell the operator about your allergen profile and needs, and ask what other tenants handle. Share concerns early. A good kitchen coordinates between tenants and reminds everyone of the rules.

See the kitchen rules.

Assess your risk

List every ingredient in each product and mark allergens. Then look at the kitchen: what other tenants handle, where flour or nut dust could travel and which equipment is shared. Rate risk high, medium or low and decide controls.

Group of chefs preparing food together in a kitchen for allergen management in a shared kitchen

Situation	Typical risk	Control
Nut products next to nut-free	High	Separate times, equipment and cleaning
Flour dust near other foods	Medium	Cover, clean and schedule
Shared oven	Medium	Clean and use trays
Allergen-free claims	High	Consider private space

Practical controls that work in a shared kitchen

Use dedicated utensils, color-coded tools and separate storage bins for allergen ingredients. Schedule allergen-free production first on a freshly cleaned station. Clean thoroughly between tasks, including shared equipment such as mixers and ovens, and verify cleaning with a documented check. Label every product clearly with its allergens and keep records of the cleaning steps.

Staff training

Train everyone who works in your business on allergen risks, cleaning and labeling. Use short checklists and refresh training regularly. Treat any allergen incident as a learning opportunity and record corrective actions.

Training matters most when the team grows.

Working with suppliers on allergen information

Ingredients can contain allergens that are not obvious. Ask suppliers for specification sheets, and watch for changes in formulation. Keep records of supplier statements and update your allergen matrix when anything changes.

Choose suppliers who provide clear, current information, since your labels depend on it.

Separate storage and equipment

Store allergen ingredients in sealed, labeled containers on separate shelves, below and apart from ready-to-eat items. Use dedicated or color-coded utensils, boards and containers where possible.

Where equipment is shared, plan cleaning steps and verify them.

Cleaning that actually removes allergens

Cleaning means removing residue, not just wiping. Wash with detergent, rinse and sanitize, and pay attention to crevices, handles, seals and floors. Dry cleaning of dust may need vacuuming rather than sweeping.

See cleaning vs sanitizing equipment.

Group of people standing around a stove preparing food for allergen management in a shared kitchen

A worked example: running nut-free production in a shared kitchen

Suppose a baker makes nut-free cookies in a kitchen where another tenant makes nut granola. She books the first slot of the day after the kitchen has been deep cleaned, uses her own labeled bowls and trays, stores ingredients on a separate shelf and wipes down the bench before she starts. She checks supplier statements for each ingredient and keeps cleaning logs. She also tells customers that her products are made in a shared kitchen and what controls she uses.

This approach reduces risk but does not eliminate it, so honest communication matters. If a customer needs a guarantee of zero risk, she directs them to dedicated facilities.

What to do if an allergen incident occurs

If a customer has a reaction, call emergency services first if needed. Then record what product, batch and date were involved, keep samples, tell the operator and your insurer, and follow local reporting rules. Review your controls and fix the cause.

Treat incidents as data. A calm, documented response protects customers and your business.

Allergen audit checklist

Once a quarter, walk the kitchen with a checklist: are allergen ingredients stored low and sealed, are utensils color-coded, do labels match current recipes, are cleaning records complete and does everyone on the team know the allergen rules? Fix gaps immediately and record the date. A short, regular audit protects customers and your reputation.

Scheduling and workflow

Run allergen-free products first on freshly cleaned stations, and allergen products later. Avoid overlapping risky tasks next to allergen-free work. If possible, agree quiet times with the operator.

Good scheduling reduces the chance of cross-contact without extra equipment.

Labeling and records

Labels must declare major allergens clearly. Keep an allergen matrix listing each product and its allergens, and update it when recipes change. Keep cleaning logs. These records show customers and inspectors that you take allergens seriously.

See food labeling regulations.

Chef preparing food on a commercial grill for allergen management in a shared kitchen

When to choose private space

If your products are allergen-free, vegan, kosher or serve vulnerable customers, a private kitchen gives full control. For many products, shared space with strong controls is enough. Decide based on your claims and risk tolerance.

See shared vs private kitchen rental.

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Frequently asked questions

Straight answers to the questions food businesses ask most about allergen management in a shared kitchen.

Can I make nut-free food in a shared kitchen?

Only with strict controls, and strict claims may need private space.

What are the major allergens?

Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans and sesame in the U.S.

How do I clean flour?

Vacuum or damp wipe, wash surfaces and equipment, and avoid spreading dust.

Do I need an allergen matrix?

It is good practice and helps with labels and audits.

Who is responsible?

Every tenant for their products, and the operator for the framework.

What if there is an incident?

Report to the operator, record it and take corrective action.

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