To craft a tangy take on a classic mix:
2 oz bourbon
1 oz Rhubarb Honey Shrub
.75 oz lemon juice
1 egg white
Add bourbon, lemon juice, rhubarb honey shrub and egg white to a shaker. Dry shake. Fill shaker with ice. Shake vigorously for 15 seconds. Strain into a coupe glass. Garnish with 3 dashes of bitters. Cheers!