Brazil's national cocktail (the Caipirinha) meets Mexico's Margarita. The muddling of lime to release oils from the skin is key to the success of this...
My lime wasn't tart enough so I had to add some extra juice to counter the sweetness but aside from that it was really good. It was absolutely recognizable as a Caipirinha, but with the added floral dimensions from Tequila and bitters. The triple sec is surprisingly muted except for the very finish when you get the zest from both limes and the triple sec. Delicious cocktail and an excellent alternative to a typical Caipirinha.