Gluten-Free Cooking in a Regular Restaurant Kitchen

Gluten-free food can be prepared in an ordinary kitchen if gluten does not get into the dish from surfaces, utensils, oil or water. The keys are separate utensils, a separate fryer or oil, fresh pasta water, the right order of preparation and clear communication between the floor and the kitchen. Completely excluding gluten may not always be possible in a mixed kitchen, so be honest with guests about what you can guarantee.

Why gluten-free ingredients are not enough

For people with coeliac disease, even a small amount of gluten can be a problem. In the EU a food can carry the "gluten-free" label if it contains no more than 20 mg of gluten per kilogram (Implementing Regulation (EU) No 828/2014). The limit also applies to restaurant dishes if you label them that way, and it shows how little gluten is enough. A pinch of flour on a board or a drop of water from pasta is more than enough.

So: gluten-free ingredients are necessary but not sufficient. More about gluten is in Hidden gluten.

Where cross-contamination comes from

Source	Example
Surfaces	board, worktop, oven, grill
Utensils	knives, spatulas, sieves, colanders, wooden spoons
Oil	a fryer in which breaded food is fried
Water	water from pasta, soups or dumplings
Ingredients	flour in the air, crumbs, shared spice containers
Hands and clothing	hands after handling bread, an apron
Bread and toast	a toaster or grill used for bread

Separate utensils and surfaces

• Separate utensils. Set aside a colour-coded set (for example purple) for gluten-free preparation: knives, boards, spatulas, sieves, colanders. Plastic and stainless steel can be washed thoroughly, while wood and scratched surfaces hold on to gluten.
• A clean work surface. Clean and sanitise it before preparation, or use a clean mat.
• Clean hands and apron. Wash your hands after working with bread and flour, and change your apron if necessary.
• Storage. Keep gluten-free ingredients in their own labelled containers, ideally on the upper shelves of the fridge above the gluten-containing ones.
• A separate toaster, or a layer of foil. A toaster rack full of crumbs is a classic source of contamination.

Fryer and oil

An ordinary fryer is one of the most common traps. Chips are often fried in the same oil as breaded schnitzels or croquettes, so the oil contains gluten. The options:

1. A separate fryer just for gluten-free food, with its own basket and oil.
2. Separate, fresh oil in a separate container for a particular order.
3. If you have no separate oil, do not promise that fried dishes are gluten-free. Offer a different method, such as baking or boiling.

Water for pasta and rice

Gluten-free pasta must not be cooked in water used for ordinary pasta. Use:

• a separate pot with fresh water,
• its own colander and spoon,
• care during cooking and serving so that the pasta does not touch utensils used for ordinary pasta.

Gluten-free pasta is delicate, easily overcooks and sticks together, so prepare it according to the manufacturer's instructions.

Order of preparation

The highest risk is in the rush, so set rules:

1. Prepare gluten-free food first, while surfaces are clean and hands are free of flour.
2. Prepare all the gluten-free components first, then add the other dishes of the order.
3. Cover the gluten-free dish and set it aside where nothing can fall on it.
4. Use clean plates and trays. The dish must not stand on a tray that has had crumbs on it.
5. Send it out separately and hand it to the guest in person.

Sauces, dressings and other hidden sources

Even a gluten-free dish stops being gluten-free if you add a sauce containing gluten. Check:

• thickening with flour (roux),
• soy sauce (usually contains wheat),
• stock cubes and spice blends,
• marinades and dressings,
• breadcrumbs and baking powder.

Read the label of every ingredient. Allergens and gluten must be highlighted in the ingredients list. Watch for warnings such as "may contain traces" as well, which are explained in May contain traces.

If you cannot manage gluten-free preparation

Not every kitchen can prepare gluten-free dishes reliably, for example a small kitchen where a lot of flour is used. That is fine, as long as you tell guests openly. You can offer dishes that are naturally gluten-free and simple to prepare (grilled meat without marinade, vegetables, a salad without dressing) while telling the guest what you cannot guarantee. The guest then decides for themselves.

Communicating with the guest and within the team

• The guest says they have coeliac disease. Treat it as a request for strict preparation, not as a preference.
• Ask questions. What does the guest avoid and what do they tolerate? Oats, for example: see Oats and coeliac disease.
• Pass the information to the kitchen clearly, for example with a code on the order such as "COELIAC".
• Be honest. If you cannot rule out traces of gluten, say so. The guest decides for themselves.
• Do not promise "guaranteed safe". You can say what measures you take.

From the guest's point of view, there is more in Gluten-free restaurants. Rules for allergen labelling on the menu are in Allergen labelling in restaurants.

What to check before a shift

Before every shift, go through a short checklist:

1. Is a labelled set of gluten-free utensils available?
2. Is a separate fryer or oil ready, or can you offer a different method of preparation?
3. Are gluten-free ingredients stored separately and labelled?
4. Does the whole shift know who takes the orders for coeliac guests and who prepares them?
5. Is the current allergen matrix available to the front-of-house staff?

A list like this takes a minute and noticeably lowers the risk of a mistake in a busy kitchen.

Training and documentation

Train the whole team, kitchen and front of house. Write down the gluten-free preparation procedure, keep a record of suppliers, and update it when a recipe changes. Repeat the training for every new employee. Details of the requirements for businesses and hygiene are available from ŠVPS (the State Veterinary and Food Administration) or the relevant RÚVZ (regional public health authority).

How AvoiDino can help

Guests with coeliac disease set gluten as their allergen in AvoiDino and look for dishes and restaurants that match their filter. If you have gluten-free preparation under control, that is a reason for them to find you. The app does not replace your responsibility when preparing food.

Frequently asked questions

Can gluten-free food be prepared in an ordinary kitchen?

Yes, if you keep utensils and surfaces separate and use separate oil, fresh water and the right order of preparation. A mixed kitchen may not be able to give complete certainty, however, so be honest with guests.

Can a gluten-free fryer be shared with an ordinary one?

No. If breaded food containing gluten is fried in the oil, the oil contains gluten. You need a separate fryer or fresh oil.

Can I cook gluten-free pasta in the same water?

No. Water from ordinary pasta contains gluten. Use a separate pot, fresh water and its own colander.

Can I label a dish "gluten-free"?

You have no automatic right to such a label. In the EU, "gluten-free" is governed by Regulation No 828/2014 and you can use it only if the dish meets the limit of 20 mg/kg, which is hard to guarantee in a mixed kitchen. It is better to describe to guests what measures you take, and to check the rules with ŠVPS or RÚVZ.

What should I do if a guest says they have coeliac disease?

Listen to the guest, pass the information to the kitchen and prepare the dish using the gluten-free procedure. If you cannot ensure preparation without contamination, say so openly.

Sources

• Commission Implementing Regulation (EU) No 828/2014 on the requirements for the provision of information to consumers on the absence or reduced presence of gluten in food.
• Regulation (EU) No 1169/2011 of the European Parliament and of the Council, Annex II.
• State Veterinary and Food Administration of the Slovak Republic (ŠVPS), regional public health authorities (RÚVZ): information for operators.

This information is general and does not replace medical advice. If you have an allergy, always check the ingredients with the staff. This is not legal advice; check current requirements with ŠVPS or RÚVZ.