This is a riff on a classic tiki drink called El Diablo. The addition of pineapple and chocolate adds a rich depth and total balance to this cocktail.
1 1/2 oz Blackberry Ginger Smash-infused tequila
1/2 oz fresh lime juice
1 oz pineapple juice
2 dashes aromatic bitters
2 dashes chocolate bitters
2 oz ginger beer