The goblet is just a normal goblet filled with player-made liquor. The bottle of eggnog is an early Christmas gift (1997) and was given to players with positive karma (players with negative karma got coal). Be careful with the eggnog it is "newbied", meaning you cannot lock it down and it will decay *very* quickly if you put it on the ground. Like 15 seconds or so. But it will stay in your pack if you die like a blessed item.