Autumn Leaves Cocktail

1 dash Angostura Bitters
.25 oz. Carpano Antica
.5 oz. Ramazzotti Amaro
1.25 oz. Four Roses Single Barrel Bourbon
Fill glass with large ice cubes
Stir for 30-60 seconds
Add few drops of Lemon Juice
Stir 10 more seconds
Pour into Old Fashioned Glass over large ice cube or sphere
Garnish with oil from Lemon Peel and discard