Bone Char (Sugar Refining) — Hidden Processing Agent — Is It Vegan?

Vegan status: Not Vegan

Also known as: Bone black, Animal charcoal, Natural carbon filter

Source

Produced by charring cattle bones at high temperature to create a porous carbon filter. Used in the sugar refining process to remove colour, impurities, and calcium from raw cane sugar juice.

Used in

Refined white cane sugar, icing sugar, some brown sugars (which are refined white sugar with added molasses). Used during processing, not present in the final product.

Appears on label: No. Bone char is a processing aid, not an ingredient, and never appears on labels in any country. The sugar itself contains no animal residue — but the process uses animal bones.

How to avoid

Use beet sugar (always vegan — processed with ion-exchange resins), unrefined raw cane sugar, coconut sugar, maple syrup, or agave. In the UK, Billington's and Silver Spoon (beet-based) are confirmed vegan. Contact sugar brands directly to ask about their filtration method.

Notes

The most significant hidden non-vegan processing agent in food. It affects primarily cane sugar from the USA and some Asian producers. UK and European sugar is predominantly beet-derived and does not use bone char. Organic cane sugar is not automatically bone-char free — organic only refers to farming practices, not processing.