Glühwein

German malt wine. For 1 liter:

a 0,75 liter bottle of dry red wine
0,25 liter water
juice of one orange
juice of one lemon
12 cloves
2 cinnamon sticks
mace (optional)
sugar according to taste (I prefer 3 tablespoons)

Bring 0,25 liter water to a boil, add the spices, simmer for 10 minutes or so and let stand overnight (or at least a couple of hours). Sieve out the spices, add wine , orange juice, lemon juice and sugar. Heat to about 80 degrees Celsius. Instead of water you can start with black tea.

Weißer Glühwein:

a 0,75 liter bottle of dry white wine
0,25 liter water
fresh apple juice, according to taste (haven't tried adding apple juice myself)
juice of one orange
12 cloves
2 cinnamon sticks
mace (optional)
star anise (optional)
sugar according to taste (I prefer 3 tablespoons)

Glögg, Nordic variation:

1 bottle of red wine
0,25 liter water
10 cardamom pods (whole)
2 cinnamon sticks
dried ginger, but not ground
10 cloves
1/2 orange peel (dried or fresh)
sugar

Optional additions for serving: 1/2 cup raisins, 1/2 cup almonds.