If your go-to drink is a Manhattan or old fashioned, you know that aromatic bitters are an essential ingredient. A dash or two adds a certain something to classic cocktailsbut do you really know what ...

1 Double shot espresso (room temperature) 30 ml bourbon whisky 15 ml sugar syrup Dash of bitters for garnishing lemon peel Combine espresso, bourbon and sugar syrup and bitters in a cocktail shaker ...