Dreiklang (Three of a Kind)

Select and pre-chill an Old Fashioned glass.

Prepare an orange zest twist for garnish.

Stir the reposado tequila, agave syrup, and mole bitters with ice until well chilled.

Strain the mixture into the pre-chilled Old Fashioned glass filled with fresh ice.

Express the orange zest twist over the cocktail and use it as a garnish.