Equipment and preparation: you will need a deep 20cm/8in round tin and a kitchen thermometer for this recipe ... mix the grapefruit and orange juice and honey in a saucepan and heat gently ...

The cookie devotee doubles down on the citrus for these pretty bickies: first in the dough, then in a zippy citrusy ...

I took Claudia Roden’s much-loved recipe for orange and almond cake and used grapefruit instead of oranges, with huge success. The grapefruit gave the cake a very appealing bitter-sweet flavour.