The “official” version from the IBA is pretty awful, but adding a little sweetnessto the mix, either with powdered sugar or simple syrup, makes it much more palatable. It’s kind of interesting: a slightly thicker texture than I expected, and the spice adds something really special to it. Still: I would rather have a glass of port than this mixture of port, brandy, egg yolk, nutmeg, and (optional) sugar. So not awful, but not my first choice. Or even my twentieth.