The Hot Chocolate Machine has been proven and confirmed by NORAD that Santa has one built into his sleigh, it's guessed that he sips it out of a straw because of how fast he is going. 

He probably just had it installed within the last 30 years. He probably has to fix it often.

He probably has a hot cup of chocolate in Nepal, Canada, Denmark, Russia and other places. 

It's to be said that Santa's hot chocolate is the best tasting! Created with milk and topped with peppermints, marshmallows and even whipped cream!