I was a little skeptical, but tried it anyway and absolutely fell in love! I've finished off the gallon of it we made today...
1 can cranberry juice concentrate
1 can cranberry/raspberry juice concentrate
3 quarts of water
Mix in a 5-quart pot and set to simmer on the stove with:
5-10 whole cloves
2-3 cinnamon sticks, broken up
Simmer for at least an hour and serve warm.
Add a splash of red wine to your mug, if you're so inclined.