½ lemon, juice only
1 onion, thinly sliced
2 red peppers, seeds removed, cut into small pieces
2 yellow peppers, seeds removed, cut into small pieces
120g bag mixed salad leaves
3 sweet potatoes (350g/12oz each), peeled and cut into chips
2 level tbsp capers
2 x 400g tins chopped tomatoes
1½ tbsp balsamic vinegar
salt and freshly ground black pepper
1 level tsp caster sugar
2 garlic cloves, crushed
3 tbsp olive oil
1 tsp olive oil
4 level tbsp tomato purée
4 x 150g/5½oz thick cod steaks (or other firm white fish), skinless