Kumquats - bite-sized cousins of tangerines and oranges - are in season throughout winter and spring. Bathed in a tangy lime glaze, they make a vibrant topping for this lovely citrus-scented cheesecake.
1. Preheat the oven to 160°C (140°C fan/325°F/gas mark 3). Put the pine nuts, if using, in the oven for 5 minutes or so to dry during the heating-up process (but don’t let them colour). Butter the sides of a 20-22cm (8-8½in) Springform or a square