Reposado tequila, Agricole rhum (unaged), Elderflower liqueur, Lime juice
Very good cocktail and great for an aperitif. Loved the balance and the sweet and sour touch. For me it was a bit sweet, so I think I would add a bit more rye. Other than that, a great cocktail.
Agree with the orange bitters. Cocktail vaguely reminds me of a penecillin