Batavia Arrack Flip
Batavia Arrack, Cynar, Bitters, Whole egg, Cream, Brown sugar coffee syrup, Orange bitters
Shake, strain, straight up, small glass, garnish. Syrup: stir 1 tablespoon each espresso and water into 1/2 cup brown sugar. It will be a thick mixture. Let steep overnight. Keeps for one week refrigerated.
From other users
Reported on eGullet to be "disturbingly good."