Ice cream allergens: a guide to milk, gluten, egg, nuts and soy
The main allergens in ice cream are milk, plus whatever comes with the mix-ins: gluten from cookies, cake and cones, egg from custard bases and marshmallow, peanuts and tree nuts, and soy, usually as soy lecithin in chocolate. Since February 2024, packaged food in New Zealand must declare allergens in plain English and in bold, which makes labels easier to check. Cross-contact in kitchens and scoop shops is the other big thing to watch.
This is general information, not medical advice. If you or your child has a diagnosed food allergy, follow the advice of your doctor or allergy specialist.
Where allergens hide in ice cream
Ice cream itself is usually just milk, cream, sugar and flavourings. The allergens multiply once you add things to it. Here is where each one tends to turn up:
| Allergen | Common sources in ice cream | Look for on the label |
|---|---|---|
| Milk | Milk, cream, butter, milk powder, whey, caramel, white chocolate | Milk |
| Gluten | Cookies, brownies, cake batter, waffle cone pieces, malt, pretzels, crumbles | Wheat, barley, oats, rye |
| Egg | Custard bases with yolk, cookies, marshmallow, meringue | Egg |
| Peanut | Peanut butter swirls, brittles, chocolate bars | Peanut |
| Tree nuts | Pistachio, hazelnut spreads, almond praline, cashew-based vegan ice cream | Tree nut names |
| Soy | Soy lecithin in chocolate and cookie pieces | Soy |
How New Zealand labels work now
Allergen labelling in New Zealand changed recently. Under the Australia New Zealand Food Standards Code, Plain English Allergen Labelling (PEAL) came into force on 25 February 2024. Food Standards Australia New Zealand explains that allergens must now be declared using simple, plain English terms in bold font. In practice that means you will see words like "milk", "wheat" and "egg" in bold in the ingredient list, rather than technical terms like "casein".
On our own ingredients and allergens page we follow the same approach, with every allergen in bold and a quick table to filter by.
Gluten: the tricky one
Gluten is easy to miss because it hides in crunchy bits. A plain ice cream may be fine while the same base with brownie pieces is not. Two extra points for New Zealand shoppers:
- Oats: oats cannot be labelled gluten free under the Food Standards Code, so oat milk ice creams are not "gluten free" even with no added gluten.
- Malt: malted milk, malt biscuits and some chocolate bars contain barley.
Egg: not all ice creams have it
Many people assume ice cream contains egg. Custard-style and French-style ice creams do, often lots of yolk, and frozen custard is defined by it. But plenty of ice creams, including our bases, are made without egg. Egg tends to sneak in through mix-ins instead: cookies, marshmallows, meringue and cake. If you avoid egg, check every flavour, not just the brand.
Lactose intolerance vs milk allergy
These are different conditions with different needs. Lactose intolerance means trouble digesting milk sugar; many people manage with small amounts or with lactose-free products. A milk allergy is an immune reaction to milk protein and can be serious, so lactose-free dairy is not safe. For a milk allergy, you need a genuinely dairy-free product with no cross-contact risk. Our guide to dairy-free ice cream explains the options.
Cross-contact: the hidden risk
Even when an allergen is not an ingredient, it can get in. Small kitchens often make many flavours on the same equipment, and scoop shops share scoops and rinse water between tubs. Our own kitchen handles dairy, gluten, peanuts, cashews and other allergens, so we say so clearly. If you have a severe allergy:
- Choose sealed, labelled tubs over scooped ice cream where possible.
- At a scoop counter, ask for a clean scoop from an unopened tub.
- Read "may contain" statements and take them seriously.
- Ask the maker how flavours are produced and cleaned down.
- Carry your prescribed medication, as advised by your doctor.
Questions to ask before you buy
If the label leaves you unsure, ask the maker or the person serving. Good producers are happy to answer. Useful questions include:
- Is this allergen an ingredient, or is there a risk of cross-contact?
- Are dairy-free or nut-free flavours made on separate equipment, or on a separate day?
- Do the toppings, cones or sauces contain the allergen?
- Can you use a clean scoop from a fresh tub?
- Has the recipe changed recently?
Write down the answers if you're buying for someone else. If the answers are vague, or the person serving is not sure, choose something else. It is always better to skip a scoop than to take a risk with a serious allergy.
Hosting guests with allergies
When you're serving ice cream at a party, ask about allergies when you invite people, buy at least one flavour that suits everyone, and keep the tubs or labels so guests can check for themselves. Serve allergy-friendly flavours first with a clean scoop. Our party quantities guide helps you plan amounts, and our flavours page lists the allergens in every tub.
Frequently asked questions
What allergens are commonly found in ice cream?
Milk is in almost all dairy ice cream. Other common allergens come from mix-ins and cones: wheat (gluten) in cookies, cake and waffle pieces; egg in custard bases, cookies and marshmallow; peanuts and tree nuts; and soy, often as soy lecithin in chocolate. Always read the full ingredient list.
What does 'may contain traces' mean on ice cream?
It is a precautionary warning that an allergen could be present through cross-contact, even though it is not an ingredient, for example when the same kitchen or equipment handles nuts. For people with severe allergies it is an important warning; talk to your doctor about which products are safe for you.
Is soy lecithin a problem for people with soy allergy?
Soy lecithin is an emulsifier made from soybeans and is commonly used in chocolate. It contains very little soy protein, but it is still declared as soy on New Zealand labels. Many people with soy allergy tolerate it, but some do not, so follow your own medical advice.
Can I trust allergen information on a scoop shop menu?
Menus are a starting point, but shared scoops, scoop water and display cabinets can spread allergens between flavours. If you have a serious allergy, ask staff to use a clean scoop from a fresh tub, or choose a sealed, labelled tub instead, where the allergen information is printed.
