2 garlic cloves, crushed
1 lemon, cut into wedges, to serve
3 tbsp roughly chopped fresh parsley
4 large baking potatoes (roughly 225g/8oz each)
handful watercress, leaves picked, to serve
1 bay leaf
salt and freshly ground black pepper
olive oil
extra virgin olive oil, for drizzling
55g/2oz cheddar, grated
1 litre/1戮 pint whole milk (or lactose-free/dairy-free milk if necessary)
300驳/10陆辞锄 cod fillet, skin removed, boneless