Coat the rim of a cocktail glass with a mixture of finely chopped pecans and brown sugar.
Fill a cocktail mixing glass with ice. Add the bourbon, both kinds of bitters, brown sugar and cinnamon. Stir thoroughly for 1 minute.
Add a large ice cube into your cocktail glass.
Strain the drink into your cocktail glass.
Garnish with a cinnamon stick and an extra dash of cinnamon.