Plants containing Gamma-butyrolactone
horse-chestnut
pineapple, red pineapple, wild pineapple
American bird pepper, bell pepper, bird pepper, capsicum pepper, Cayenne pepper, cherry pepper, chili pepper, cone pepper, green pepper, long pepper, paprika, pimento pepper, red capsicum, red cone pepper, red pepper, sweet pepper, turkey pepper
licorice, licorice-root, liquorice
bilberry, blaeberry, dwarf bilberry, European blueberry, whinberry, whortleberry