Put the maple syrup, the bourbon and angostura bitters into a cocktail shaker and give it a good shake, then bottle, add the teabag to infuse, and keep in the freezer until needed.
Remove and discard the teabag, then pour over ice in a tumbler, coupe or martini glass, garnishing each drink with a strip of orange or clementine peel – use a speed-peeler, gently twisting before adding.