Boiled Mackerel (German Method) Recipe ingredients

To prepare this Boiled Mackerel (German Method) Recipe, first clean a large fresh mackerel and split it down the back. Put it in a dripping-pan and pour over it a pint of boiling water, 2 tablespoons of vinegar, the sauce of lemon juice, and a teaspoon of salt. Add a medium-sized onion cut in quarters. Boil for three-quarters of an hour. Remove the fish to a hot platter. Strain the liquor in the pan, add a dozen capers, let it boil up, and turn over the fish.