Fill a cocktail shaker with ice. Add the gin, Licor 43 and cream and shake well. Strain the drink into a chilled rocks glass and garnish with the bitters. note To caramelize bitters (which makes the drink more fragrant), add a small amount to a small, clean spray bottle (widely available at drugstores). Spray the bitters over the drink 3 times, simultaneously flaming the vapor by holding a lit match over the drink.