Created a gesture that physically represents ordering a shot of Fernet-Branca.

The physical gesture uses the right hand in the sign of the sign-language "F". Press your right hand, in the shape of the sign language "F" against your left upper breast and remove quickly about 6 inches. Pause there. Look at your bartender. Now is the time to order a back. If you are not ordering a back, a simple knowing look will do.

Several bartenders in the Potrero Hill & SBC Park area will know what you mean.