fat is flavour
Alternative form of fat is flavor.
noun
British standard spelling of flavor.
The flavour of this apple pie is delicious.
Flavour was added to the pudding.
verb
British standard spelling of flavor.
Food writer Annie Bell goes in the opposite direction in her gorgeous Christmas book, presenting "an homage to nut roast" in the form of a large, flat cake of blanched spinach, flavoured with thyme and lemon juice, filled with goat's cheese, and topped with toasted breadcrumbs.