What is E357?
E357 is Potassium adipate, a food additive used as an acidity regulator. Made synthetically, so there is no animal, pork or alcohol source.
Also written as: INS 357, E-357, E 357. INS is the international numbering system used outside Europe, including on labels in Asia, Australia and the Middle East.
What to do
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E357 vegetarian or vegan?
Yes. E357 (Potassium adipate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.
Why we classify it this way
Halal Made synthetically, so there is no animal, pork or alcohol source.
Basis: No concern found. Made from plants, minerals, fermentation or synthesis, or from a permitted animal product. Nothing in normal production raises a pork, alcohol, insect or slaughter question.
No external reference is listed for this record yet.
Classification audited 3 November 2026. It has not been reviewed by a scholar. How classifications work · Suggest a correction
Frequently asked questions
Is E357 halal?
E357 (Potassium adipate) is halal. Made synthetically, so there is no animal, pork or alcohol source.
What is E357 made from?
Synthetic.
What is E357 used for?
E357 is used as an acidity regulator, typically in soft drinks, sweets, jams, sauces and processed foods.
What should I do if a product contains E357?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E357 vegetarian or vegan?
Yes. E357 (Potassium adipate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.