Annatto
The substance is Annatto, an orange-red condiment and food colouring agent prepared from the seeds, with a peppery, sweet, nutty, nutmeg style of scent and flavour. It has been a traditional colourant for Gloucester cheese since the 16th century, and is a central ingredient especially in several Latin American, Jamaican, Belizean, Chamorro, Vietnamese, and Filipino cuisines.