Its a base of fruit, boiled up with vinegar/sugar/spices as an accomniant to cold meats and things, a savoury jam/jelly I guess would be the best way to describe it.
I made mine with yellow plums I gathered for FREE from the park, with windfall apples from my parents garden, and then loads of warm spices like cinnamon, cloves, juniper, ginger.... so yummy! 3804 days ago