What it is and where it comes from
Potassium sorbate is the salt of sorbic acid, which is found in rowan berries and is made synthetically for food. It stops mould and yeast.
Where you find it
Cheese, bread, cakes, dried fruit, sauces, drinks and margarine.
What to look for on the label
Nothing to check for halal.
This is a guide, not a fatwa. Recipes change, so check the label, look for halal certification, and ask your local imam where scholars differ.