Step 1

Line a grill pan with foil and brush lightly with butter. Brush the fish on both sides with butter and season. Lay on the foil, skin-side up.

Step 2

Put the tomatoes and shallot in a pan with the capers, lemon juice and oil, and season.

Step 3

Grill the bass for 5-7 mins under a hot grill until just cooked and the skin is starting to brown. Meanwhile, warm the sauce through for 2 mins, then stir in some of the torn basil leaves. Lift the bass onto warmed plates using a fish slice and spoon the sauce around. Serve with steamed new potatoes or small baked potatoes, and add the remaining basil and chives.