Verdict: Most xantham gum is vegan, but you’ll have to contact the manufacturer to be 100% sure.
For such a small and not particularly common ingredient, this was a fairly tricky one to get to the bottom of.
The reason why is that is produced by fermenting a specific type of bacteria. The problem is that there are many different ingredients used to culture it.
- Sugar cane broth – vegan (source)
- Corn – vegan
- Glucose – vegan
- Sucrose – vegan
- Soy products – vegan
- Cheese whey byproducts – not vegan (source)
- Lactose – vegan
Note that regardless of the feed used, there will be none of it in the final product if that makes a difference to you.
Most xanthan gums are created using corn feeds, but a significant amount use whey or lactose.
That’s unfortunately why you’ll need to contact the manufacturer and ask if their xanthan gum is indeed vegan or not.
I did this for Bob’s Red Mill, and they said their xanthan gum was made using corn and soy products to feed their bacteria.
Furthermore, the product-page indicates that it’s a “plant-based” product, although I wouldn’t always take that at face value.
What Do You Need Xanthan Gum For?
Maybe this is the better question.
When you’re baking and see xanthan gum, could you just skip it?
It has 3 main purposes in cooking:
- As an emulsifier, it helps liquids mix together that don’t usually mix well.
- As a thickener to make a creamy texture.
- To imitate gluten in gluten-free baking.
You can omit it, but the texture of your food will suffer.
Whether or not xanthan gum is vegan is probably not the most important debate in the world, but hopefully this post helped you answer the question for yourself.