Also, any reason to not spice it by adding cinnamon sticks or other spices during the boil?

You totally can! Sometimes I’ll add a cinnamon stick or other mulling spices while I’m reducing, but it’s important to note that because it simmers so long and the cider reduces by so much, a little REALLY goes a long way. I actually prefer it without any spices added while simmering—for me, adding a cinnamon stick garnish to the cocktail gives the drink the right amount of spice. But it’s definitely worth experimenting and figuring out what spice infusions you like!