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But that isn’t always the case for shop-bought mayo. Manufacturers sometimes add thickening agents, emulsifiers, stabilisers and other additional ingredients that are not gluten free.

What’s more, if the mayo or any of the ingredients in it are produced in a facility that also processes wheat or other gluten-containing products, they can become cross-contaminated with gluten. Always look for a mayonnaise with a gluten-free certification or check the ingredients list or with the producer to make sure it is 100% coeliac safe.

Another issue that coeliacs or those with non-coeliac gluten sensitivity should be aware of is cross contamination caused by sharing jars of mayonnaise. If you’re particularly sensitive to gluten, it’s a good idea to keep your own jar of mayo in the fridge for your personal use. That way you won’t have others dipping their gluten-coated knives inside. Another option is to go for mayonnaise in a squeezy bottle.

What is mayo made of?

The core ingredients of mayonnaise are eggs, oil, vinegar and/or lemon juice, plus some form of seasoning. To make it, you first emulsify the eggs and oil together and then add acid in the form of vinegar and/or lemon juice. Seasonings can include salt, pepper, sugar, mustard, mustard seed and celery seed. It’s best to use a mild-flavoured oil such as sunflower, because stronger-tasting oils like olive oil can overwhelm the flavour. Also avoid using malt vinegar, which may not be gluten free.

How to make mayo at home

If you want to ensure your mayo is always gluten free, make it yourself at home! Try our brilliant gluten-free mayonnaise recipe.

Ingredients
1 egg
1 tbsp vinegar
1/4 tsp salt
240ml oil – a mild-tasting variety such as sunflower is best
1 tsp lemon juice
Seasoning – pepper, sugar, mustard, mustard seed, celery seed are all good choices

Method

  • Crack the egg into a food processor and mix for 30 seconds.
  • Add the vinegar and salt and blend for another 30 seconds.
  • Keep blending and start adding the oil a few drops at a time. It’s important not to add the oil too fast so it thickens properly.
  • Once the mixture has thickened, stir in the lemon juice and seasoning. You’re done!

Your mayonnaise should keep for up to two weeks sealed in an airtight container in the fridge.

Recipes with mayo

Put your newly prepared home-made mayo to good use in these dishes…

Onion rings with chilli mayonnaise

Some mayonnaise boosted with a bit of chilli sauce is the perfect accompaniment to our crispy gluten-free onion rings made with Schär Mix Bread and Paniermehl Breadcrumbs.

Shrimp toast

A Nordic classic made gluten free. To make these shrimp toasts, take slices of our Pane Casereccio, smother in creamy mayo, and top with succulent prawns and slices of boiled egg. Divine.

Hot dogs

Mayonnaise is a natural partner to this American classic. Follow our instructions to make your own gluten-free hot dog buns, then load them up with Frankfurters, fried onions and lashings of your home-made mayo.