Combine all ingredients into a mixing glass over ice
Stir for 20 seconds
Strain over a big cube into an old fashioned glass
Take an orange peel and express oils over drink. Light a match for extra effect.
I've found agave syrup to be sweeter than typical demerara, so be careful not to use too much. 1 teaspoon should be plenty. The flamed orange peel is a great touch and is fun to do when making drinks for guests, but the drink is certainly still delicious without it.