I like this recipe from Mt Rose Herbs:
1/2 cup fresh grated ginger root
1/2 cup fresh grated horseradish root (you can use the stuff that comes in vinegar from the store too, fresh is hard to find in the winter)
1 medium organic onion, chopped
10 cloves of organic garlic, crushed or chopped
2 jalapeno peppers, chopped
Zest and juice from 1 organic lemon
2 tbsp rosemary
1 tbsp tumeric
apple cider vinegar (Braggs is the best)
(this comes later) raw honey to taste
Put everything in a quart jar. Place a piece of wax paper of plastic over the lid, so the vinegar doesn't come in contact with the metal. Store in a dark, cool place for one month and remember to shake daily.
Strain through cheesecloth and add about 1/4 cup of honey and stir until incorporated. Taste your cider and add another 1/4 cup until you reach the sweetness you like.
You can add to seltzer, hot water, or just do shots straight! It's good when you're coming down with a cold, or when you don't want to get one. Fire cider is an herbal supplement to boost the immune system, stimulate digestion, and spice up your winter days.