The first time I hosted a cocktail party, I spent most of my time preparing cocktails to order. The drinks were great, but it prevented me from having much fun. Making batches of drinks in advance is a much better idea—all it takes is a little math.
'winter holidays' on Serious Eats
One thing that people tend to do more in December than during all other months combined is introduce eggs into their strong drink. I'm not talking about the light, foamy cocktails made with a little egg white that you see throughout the year; rather, these are the rich, thick nogs of winter that trace an ancestral linage back to the flips of colonial America.