Bone the herrings and cut into 12 fillets. Sprinkle with salt and pepper
and roll up, skin-side outwards. Place the herrings in an ovenproof dish
just large enough to hold them. Sprinkle the bay leaf, cloves and
peppercorns over. Mix together the water and vinegar and pour over enough
to cover the fish. Cover and bake in a preheated oven at 160°C/325°F/gas
mark 3 for 30 minutes.