Remove the skin and strings from six ounces of fresh beef-marrow; chop it up very fine, and place it in a basin; pick and wash three ounces of dried currants, and mix them well together with the marrow; add three ounces of Malaga raisins, three-quarters of a pound of crumbled bread-crumbs, half a gill of Madeira wine, half a gill of brandy, half a gill of rum, the grated rind of half a lemon, two ounces of candied citron, shred very fine, two ounces of powdered sugar, a saltspoonful of salt, and two whole eggs. Moisten the whole with a gill of cold milk, add a saltspoonful each of allspice, ground clove, and cinnamon, and half the quantity of grated nutmeg; knead well with the hands, so that the ingredients are thoroughly incorporated, which will take ten minutes. Boil some water in a saucepan capable of holding the pudding; butter and flour a cloth, lay it on a large colander, which will answer for a hollow mold; pour the mixture into it, then hold the four corners together, and tie it firmly, allowing sufficient space for it to swell. Plunge the pudding into the boiling water, and let cook, leaving it half covered; the water must boil steadily for five hours; every hour turn it over, and then make the following sauce: Put into a saucepan one ounce of fresh butter, two drachms of flour, and three drops of lemon juice, finely sliced rind of a quarter of a lemon, half a saltspoonful of salt, add half an ounce of powdered sugar. Moisten with a gill of port wine, then place the pan on the stove, and with a spatula stir well, until it comes to a boil. Remove from the fire, and strain through a fine sieve into a bowl. When ready to serve, drain the plum pudding for one moment, untie, and open the cloth; serve it immediately, pouring some of the sauce over.