The Poison Apple is a Halloween cocktail that was first published on Delish, an online food and beverage blog. The original recipe was created to be somewhat of a sweet seasonal spectacle because it called for Fireball whiskey, cranberry juice, apple cider, grenadine, and edible glitter. This version turns it into a more sophisticated concoction that's still tasty but uses rye instead of Fireball, omits the grenadine and glitter, and adds lemon for more balance.
Add whiskey, cinnamon syrup, cranberry juice, apple cider, and lemon juice to a shaker.
Fill shaker with cubed ice.
Shake for 10-20 seconds.
Fill a lowball glass with fresh cracked ice.
Using a Hawthorne strainer, strain into lowball glass.
Garnish with apple slices.