Why It's Confusing
Croissants look like plain pastry. The butter is folded into the dough during lamination and is invisible by the time the croissant is baked. The same dairy proteins flagged on labels for milk and butter, such as casein and whey, still apply here.
"Plain" or "all butter" labelling can be misleading. "All butter" is a quality marker in the UK and EU, not a warning. Even unmarked croissants almost always contain butter, milk, and often egg.
Where It Commonly Appears
- French bakeries and patisseries worldwide
- Supermarket bakery aisles in the UK, EU, and North America
- Hotel breakfast buffets
- Coffee chains (Starbucks, Costa, Pret, Caffè Nero)
- Airline and lounge breakfast service
It may also appear on labels as:
- Butter (beurre)
- Whole milk, milk powder, whey
- Egg, egg wash, glaze
What To Watch For
- Butter is the defining fat in a traditional croissant, there is no traditional butter-free version
- Egg wash on top, even when the dough itself is dairy-free
- "All butter" labelling, which is a UK and EU quality marker, not a warning
- Almond, chocolate, and ham-and-cheese croissants add further animal ingredients on top of the base dough
Vegan Alternatives
- Ask for "vegan croissant" explicitly, not "dairy-free"
- UK chains: check the current Greggs vegan menu for pastries that rotate in and out [[2]](#source-2) [[3]](#source-3)
- Independent plant-based patisseries in most major cities now offer butter-free laminated pastries
- Supermarket own-label croissants are usually still made with butter, so look for a clear "vegan" label
Sources
1. The Vegan Society, Definition of veganism. https://www.vegansociety.com/go-vegan/definition-veganism 2. Greggs, Our tasty vegan menu. https://www.greggs.com/news/our-tasty-vegan-menu 3. PETA UK, Greggs vegan options: full list of pastries and more. https://www.peta.org.uk/news/greggs-vegan-options/