After all, I’ve unwittingly known of the Bar-Kays’ existence since I saw “Spies Like Us,” as a kid which featured “Soul Finger” in that crazy scene near the end.

Like salad forks and French menus, finger bowls were once an extraordinary custom, sure to befuddle an average person. Finger bowls were typically used after the fruit course in a 6-course meal to ...

As well, most bars have a standard pour of 1.25 to 1.5 ounces, making it difficult to figure out how to charge for each finger.