Put four ounces of powdered sugar in a stewpan, which stir over a slow
fire till quite melted and beginning to tint, take it off the fire; in
another stewpan have three quarters of a pint of milk in which you have
boiled an ounce of isinglass, pour it upon the caramel, which stir
occasionally until it is quite dissolved, pour into another stewpan with
the yolks of five eggs, stir over the fire till it thickens, when pass
through a tammie, and finish as before.