1 gallon apple cider
1 gallon apple juice
2 cups white sugar
6 large glass bottles
6 cinnamon sticks
1 (1 liter) bottle 190 proof grain alcohol (such as Everclear®)
Bring apple cider, apple juice, and sugar to a boil in a large pot over medium heat until sugar is dissolved, about 10 minutes. Divide juice mixture evenly into the bottles. Add a cinnamon stick to each bottle.
Divide alcohol into the bottles and allow mixture to cool; seal and store in a cool dry place.