Grilling tomatoes intensifies their flavour. Buy ripe but firm tomatoes that will keep their shape during cooking.
Tomatoes are a wonder food. One medium tomato contains more than half the daily requirement for vitamin C. Tomatoes also contain a phytochemical called lycopene that protects against prostate cancer and is known to slow damage to human cells caused by ageing and disease.
Thickly slice 600 g large tomatoes or use cherry tomatoes and cut in half. Grill or barbecue as for the main recipe, but for 2 or 3 minutes only. Place in a serving bowl with 1 medium red onion sliced into thin rings. * To make vinaigrette, whisk 4 tablespoons olive oil, 2 tablespoons red wine vinegar, salt, freshly ground black pepper and 2 tablespoons chopped fresh mixed herbs until combined. Stir into salad. * Cut 250 g feta or baked ricotta into cubes. Sprinkle over salad. Add chopped fresh basil leaves. Serve with ciabatta.