Grilled tuna with caper berries and roasted plum tomatoes Ingredients 4 x 180g tuna steaks For the tuna marinade 200ml rapeseed oil 2tsp chopped rosemary 2tsp chopped thyme 2tsp chopped parsley 2 garlic cloves, grated 1tsp salt pinch of ground black pepper zest and juice of 1 lemon For the salad 200g salad rocket 20