This is a variant of proper period hypocras, with a few tweaks. The period recipe would usually have been made with ground spices, wrapped in a fine cloth. The period version would also have been served either warm or cool, while this version is reasonably tasty at room temperature but is best when served quite warm on a cool. If cooled, it can be reheated in a microwave oven. The recipe is quite flexible and can be tweaked in many ways.
Some ingredients are optional.
Galingale, for example, is a relative of ginger and is relatively hard to find. The author recommends using an inexpensive Burgundy or Merlot as the base. Ambergris is a waxy, grayish substance formed in the intestines of the sperm whale and found floating at sea or washed ashore. It was used as a fixative in perfumes. Infuse these ingredients for 24 hours, then dissolve 1 pound of sugar in 1 quart of red wine or cider.