Sack Posset

Take a pottle of Cream, and boil in it a little whole Cinnamon, and three or four flakes of Mace. To this proportion of Cream put in eighteen yolks of eggs, and eight of the whites; a pint of Sack; beat your eggs very well, and then mingle them with your Sack. Put in three quarters of a pound of Sugar into the Wine and Eggs, with a Nutmeg grated, and a little beaten Cinnamon; set the Bason on the fire with the Wine and Eggs, and let it be hot. Then put in the Cream boiling from the fire, pour it on high, but stir it not; cover it with a dish, and when it is settlede, strew on the top a little fine Sugar mingled with three grains of Ambergreece, and one grain of Musk, and serve it up.