Saw people making it and given I actually had Bulleit I went for the OG recipe:

2 oz Bulleit Bourbon

0.5 oz Mr Black

2 dashes of orange bitters

Orange peel

Stir everything except the peel with ice for about 30 seconds; strain into a chilled small coupe or Nick & Nora glass; express orange peel over drink (through a flame but I couldn’t be bothered) and garnish with peel.