Harvest season is in full swing. Farmer’s market counters overflow with pumpkins and squash, orchards are bursting with apples and pears, and all I want to drink is warmly spiced cider, mulled wine, and chai. (And, yes, the occasional pumpkin spice latte…I’m not immune to its charms.) Two years ago I created my Chai Spice Snickerdoodles, and with it my own chai spice mix. From there, I added that same spice mix to apple pie, and have used the leftover mix in my coffee as well. Spoiler alert: it’s delicious. Then the following spring, a friend asked for chai-flavored pound cake for her birthday, so I added that chai spice…