I’m no expert, but this is the recipe I’ve used several times. I usually cut it in half and get about 5.5 quarts. The nutmeg is my most recent addition.
1 gallon apple cider
1 gallon apple juice
1.5 cups white sugar
6-8 cinnamon sticks
A little bit (maybe 1/2 teaspoon) of freshly grated nutmeg
1 liter 190-proof Everclear
Combine everything except the Everclear in a large pot, and heat to a simmer. I let it simmer for 30 minutes or so. Let it cool, then strain out the cinnamon and nutmeg with cheesecloth (if you don’t use nutmeg, you don’t need to strain it). Stir in the Everclear and refrigerate.
It’s good cold, but it’s even better warm. It works out to about 11% ABV, so even though there is a Everclear in it, it’s not terribly strong.