Can I Sell Gluten-Free Cakes from a Cake Shed?

What does "gluten-free" mean legally?

Under UK and EU retained food law, a product labelled "gluten-free" must contain no more than 20 parts per million (ppm) of gluten. A product labelled "very low gluten" must contain under 100 ppm. These thresholds are set by Commission 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, which is retained in UK law post-Brexit.

These are legal definitions — not marketing terms. You cannot label a product "gluten-free" unless you can demonstrate through testing or rigorous process controls that it consistently meets the 20 ppm threshold. Using gluten-free ingredients alone is not sufficient evidence. Cross-contamination during production can raise gluten levels above 20 ppm even when no gluten-containing ingredients were deliberately added to the recipe.

This is the key point that many small food producers — particularly those new to allergen management — underestimate. The label claim "gluten-free" is a measurable, legally defined statement about the final product, not a statement about the recipe.

Is a home kitchen safe enough to produce gluten-free cakes?

This is the central question — and the honest answer is: it depends entirely on your processes, not your location. A well-managed home kitchen with dedicated gluten-free equipment and strict protocols can produce safe, genuinely gluten-free products. A shared kitchen where gluten-containing and gluten-free products are made using the same equipment, on the same surfaces, in the same environment cannot — regardless of how thoroughly you intend to clean between batches.

Environmental Health Officers do not categorically prohibit home kitchens from producing gluten-free products. What they assess is whether your cross-contamination controls are robust enough to substantiate any claim you make on the label. If you claim "gluten-free", you need to be able to demonstrate — through equipment segregation, cleaning protocols, ingredient sourcing records, and ideally product testing — that your products meet the 20 ppm threshold.

The key risk factors in a home environment are:

• Shared equipment (mixers, baking trays, cooling racks, utensils, measuring cups)
• Shared work surfaces — gluten particles bind to surfaces and are difficult to remove completely with standard cleaning
• Shared flour storage — standard wheat flour is very fine and can contaminate entire cupboards and surrounding surfaces when opened
• Shared tea towels and cleaning cloths — a cloth used to wipe a surface with wheat flour residue will spread contamination if used elsewhere
• Airborne flour — wheat flour can remain suspended in air for hours after use, settling on surfaces, equipment and open product
• The presence of other household members baking with standard flour at any point in the kitchen

Dedicated equipment: what you actually need

If you want to sell products that can genuinely be labelled "gluten-free", you need a completely separate set of equipment that is never used for gluten-containing baking. This includes:

• Mixing bowls (all sizes used)
• Baking tins and trays
• Cooling racks
• Spatulas, wooden spoons, and other utensils
• Measuring cups and spoons
• Colanders (if washing fruit or rinsing ingredients)
• Storage containers and bags used for ingredients
• Scales (clean thoroughly between uses, or dedicate a set)

These items should be stored separately — ideally in a sealed box or dedicated cupboard that is never opened during gluten-containing baking sessions — washed separately, and never, under any circumstances, used for standard baking.

Colour-coding is the practical system used in professional kitchens and strongly recommended for home gluten-free producers. Assign one colour (commonly blue) exclusively to gluten-free equipment. This makes it immediately obvious if cross-use is occurring and helps if anyone else uses the kitchen.

A dedicated stand mixer is one of the most important investments if you're making gluten-free cakes at any volume. The inner workings of a stand mixer are almost impossible to clean completely — flour particles accumulate in the motor housing, around the drive shaft, and in the bowl attachment mechanism. A mixer that has been used for wheat-flour cake batter should not be used for gluten-free production, regardless of cleaning.

Cross-contamination risks you might not have considered

Beyond the obvious equipment and surface risks, several less-obvious vectors for gluten cross-contamination catch home producers out:

• Flour in the air: Standard wheat flour can remain airborne for several hours after use. If you bake a gluten-containing product in the morning and a gluten-free product in the afternoon in the same space, cross-contamination is genuinely possible — even with the gluten product long finished and surfaces cleaned.
• Shared oven: A conventional oven used for both gluten and gluten-free products can transfer contamination through crumbs, residue on oven shelves, and steam from earlier bakes. Always clean ovens thoroughly between uses, and if possible, bake gluten-free products first in any given session.
• Packaging surfaces: If you package gluten-free and standard products on the same surface — a kitchen worktop, a packaging table — cross-contact can occur from crumbs and residue. Dedicate a clean, single-use surface covering (such as greaseproof paper) for gluten-free packaging, or designate a specific surface.
• Your hands: Wash thoroughly before handling gluten-free products if you have been handling gluten-containing ingredients. Simple hand contamination is a real vector.
• Toppings and decorations: Many commercially produced cake decorations — edible glitter, sprinkles, sugar strands, ready-made fondant, marzipan — contain wheat starch or are produced in facilities that handle gluten. Always check the allergen declaration on every topping or decoration you use in a product you intend to label gluten-free.
• Shared storage of ingredients: Storing gluten-free flour in a cupboard alongside standard flour — particularly loose bags — creates a genuine contamination risk through spillage and airborne particles when the cupboard is opened.

What should the label say?

The label claim you use must accurately reflect the product's actual gluten status and your production controls. There are three realistic positions:

In all cases, your product label must also carry a full ingredient list in descending order by weight, with all 14 major allergens emphasised in bold — including cereals containing gluten, which must be specified (wheat, rye, barley, oats, spelt, khorasan wheat). This is a Natasha's Law requirement for any pre-packed or PPDS product.

The coeliac community and trust

For people with coeliac disease, gluten cross-contamination is not a matter of preference or mild intolerance — it is a serious medical concern. Coeliac disease is an autoimmune condition in which even very small amounts of gluten — as little as 10mg per day — can trigger an immune response that causes intestinal damage. The consequences of a reaction can include days of illness, longer-term intestinal injury, and for people with already-compromised health, more serious complications.

This means that mislabelling a product as "gluten-free" when it is not genuinely safe for coeliacs is not a minor compliance issue — it is a real health risk to a vulnerable group of people who are placing genuine trust in your label. The coeliac community is also highly networked online, and cake shed operators who develop a reputation for safe, reliable gluten-free products benefit enormously from word of mouth within that community. The reverse is also true.

Coeliac UK's guidance recommends that people with coeliac disease seek products made in dedicated gluten-free environments where possible. Being transparent about your production setup — even if that means saying "made with gluten-free ingredients, not suitable for coeliacs due to shared kitchen" — is always better than making a claim you cannot substantiate. Many successful cake shed operators explicitly position themselves as either fully dedicated gluten-free environments, or as "gluten-free ingredient" producers who are clear about their limitations.

Can you register as a gluten-free specialist cake shed?

Yes. When you register your food business with your local authority, you can indicate your intended food production activities — including a specialism in gluten-free products. Your EHO inspection will assess whether your premises and processes are suitable for the claims you intend to make.

If you're making coeliac-safe claims, your EHO will specifically scrutinise your cross-contamination controls, equipment segregation, ingredient sourcing records, and cleaning procedures. This is standard procedure, not unusual scrutiny — it reflects the seriousness with which food safety authorities take allergen management.

Coeliac UK's "Crossed Grain" trademark is available to food businesses that meet their strict criteria, which include independent testing and process auditing. Achieving the Crossed Grain trademark provides credible, recognisable third-party endorsement to coeliac customers. It is particularly valuable for cake shed operators who want to build a reputation in the gluten-free community. Details are available on the Coeliac UK website.

Beyond formal accreditation, documenting your processes thoroughly — keeping records of ingredient batches, cleaning logs, equipment inventories, and any product testing results — is both best practice and powerful evidence for EHO inspections and any due diligence customers may request.

How to track allergens in recipes

Managing allergens across a product range — particularly when you make both gluten-free and standard products — requires a systematic approach to ingredient tracking. Manual spreadsheets quickly become difficult to maintain as your recipe list grows, and a single ingredient change can affect allergen declarations across multiple products.

FoodCore's allergen matrix software allows you to flag every ingredient for its allergen content — including cereals containing gluten — and see a full allergen matrix across your entire product range at a glance. When an ingredient changes (for example, you switch to a different brand of chocolate chips that has a different may-contain statement), the allergen matrix updates automatically across every recipe that uses it.

FoodCore also prints Natasha's Law compliant labels that correctly declare cereals containing gluten in bold within the ingredient list, and allows you to add precautionary allergen statements where required. The Essentials plan starts at £19/month and covers recipes, allergen tracking, and label printing.

Frequently asked questions

Are gluten-free oats safe for coeliacs?

Oats are naturally gluten-free, but they are commonly cross-contaminated with wheat during growing, harvesting, and processing — particularly in the UK, where oats and wheat are often grown in rotation on the same fields and processed in shared facilities. Standard oats — including many "plain" or "rolled" oats from mainstream UK supermarkets — should never be used in a product labelled gluten-free for coeliacs.

Gluten-free oats are specifically grown on dedicated fields and processed in segregated facilities to avoid wheat contamination. These are clearly labelled as "gluten-free oats" (or carry a gluten-free symbol). Even with gluten-free oats, some coeliacs — estimated at around 5–10% of those with the condition — react to the oat protein avenin, which can trigger a similar immune response to gluten. If you're producing for coeliacs, it is worth noting on your label if the product contains oats (even gluten-free ones), so that particularly sensitive coeliacs can make an informed decision.

Can I use the same oven for gluten-free and regular baking?

Yes, but only with care. Shared ovens can transfer gluten contamination through crumbs and residue left on oven shelves, the oven floor, and fan elements. If you use the same oven for both, the safest approach is to: thoroughly clean the oven — including all surfaces, shelves, and the door seal — before any gluten-free bake; always bake gluten-free products first in any session before switching to gluten-containing items; and use fresh baking parchment or a dedicated baking liner for gluten-free products rather than placing them directly on oven shelves.

If you're producing significant volumes of gluten-free products, a dedicated oven is worth the investment — both for quality of production and for the confidence it gives to coeliac customers and EHOs.

Do I need to test my products for gluten?

If you're making a commercial "gluten-free" label claim, product testing is the only way to be certain you are meeting the 20 ppm legal threshold. No amount of careful process management can completely eliminate the possibility of contamination — testing confirms whether your processes are actually working. Test kits for home use are available from around £30, and certified laboratory testing (which provides legally defensible results) typically costs £50–£150 per test depending on the lab.

For home bakers producing small volumes, rigorous process controls — dedicated equipment, sourcing certified gluten-free ingredients, thorough cleaning protocols, and documentation — represent the minimum standard that EHOs will expect. Testing provides the highest level of assurance and is strongly recommended for any producer making explicit gluten-free claims to coeliac customers.