I recently featured We Love Jam's transcendent apricot jam, but to close out Breakfast Week I needed to return quickly to them and show you their Tart Cherry Grapefruit Jam. This is such a unique combo, and it is indeed "electric" as one of their customers said. It's rich and not very sweet, with a serious zing from the grapefruit. Amazing!
(Also note their kumquat marmalade, at the same link above. It's a finely textured, bright marmalade - one of my favorites ever. Alas, this is the last year they're making it, so get it while they've got it.)