For the clove simple syrup: Combine the brown sugar, cloves and 1 cup water in a pan and heat until the sugar is dissolved. Allow to cool and sit for 2 to 3 hours; strain off the cloves before using. (Store any remaining syrup in a sealed jar, refrigerated, for up to 1 week.)
For the cocktail: Add the bourbon, lemon juice and clove simple syrup to a shaker and add ice. Shake vigorously and pour into a highball glass. Top with hard cider--and if you're feeling fancy--garnish with an apple slice studded with a few whole cloves. That part is optional though. As are pants.