Few fruit families have as much to offer the cook as the citrus. Loving photographic portraits of the four key fruit - lime, lemon, grapefruit and orange - are accompanied here by stylishly-shot recipe suggestions for each. So mix up a mojito, create a marmalade and ice-cream dessert or a buttermilk and grapefruit jelly, or stick with the savoury option of lemon rice and beef fillet with an orange and carrot salad.