Combine Dark Rum, Grape Juice, Beet Honey Syrup, and Bitters in a shaker with ice and shake. Strain in a coupe glass. Top with a splash of Tonic Water. Garnish with a small bunch of grapes. 

*Rich Beet Honey Syrup
2 cups Honey
1 cup Beet Juice
1/2 cup Water

Combine all ingredients in a bowl. Whisk to combine.