What it is and where it comes from
E1422 is plant starch that has been treated so it thickens better and holds up to heat, freezing and acid. The other modified starches (E1404 to E1452) are the same idea. No animal or alcohol source is used.
Where you find it
Yoghurt, desserts, sauces, soups, ready meals, pie fillings and dressings.
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.