Grzane Piwo or hot beer.
1 litre of beer - lager is good since it is mild but I suppose dark beer could be used as well.
1 egg - but do, please do separate the white from the yolk (yellow stuff :)
You could use a mulled wine spice mix or make your own spice combination - whatever you prefer.
I used a small bag for spiced hot wine. Just put it inside the beer in a pot.
Stir 2 teaspoons of sugar and 1-2 teaspoons of honey to the separated egg yolk. It is good to do it before adding to beer.
Heat beer but do not boil - hot is good enough. Start adding the yolk with sugar and honey. Stir the whole time. Do not boil, heat and serve in thick mugs - very hot so careful.
You can add whatever spices you want. Nutmeg, cinamon, even pepper or paprika are fine.
As a special treat you could add a splash of vodka just before serving... dangerous.
Quite nice.