2 tablespoons apple brandy (such as Calvados or Laird's)
2 tablespoons bourbon
2 tablespoons fresh apple cider
1 tablespoon fresh lemon juice
1 dash of Angostura bitters
Dried or fresh apple slice (optional)

Fill a cocktail shaker with ice. Add 1 tablespoon thyme simple syrup, apple brandy, and next 4 ingredients. Shake cocktail vigorously 10-15 times and strain into a chilled Martini glass. Garnish with apple slice, if desired.

Thyme Syrup
1/2 cup sugar
15 sprigs thyme