Wassail comes from the Anglo-Saxon toast "waes hael" or be whole". The first carols were Yuletide drinking songs and singers caroled their neighbourhoods carrying their wassail bowls with them. That was just to get you into the spirit, now down to business. I have no idea how many servings you'll get. When I make this I don't use any alcohol and I serve small amounts to younger children (diluted with apple juice) while the men bring big coffee mugs (with their own spirit base).