8 sprigs fresh basil
4 sprigs fresh tarragon
8 sprigs fresh coriander
1 small red onion, peeled and quartered
3 tomatoes, peeled, quartered and seeded
1 clove garlic, crushed
grated rind and juice 1 lemon
15ml (1 tbsp) capers
60ml (4 tbsp) olive oil
4 x 200g (7oz) halibut steaks
salt and freshly ground black pepper
fresh chives, to garnish