What Exactly Is a Mezzo-Mezzo?

What Exactly Is a Mezzo-Mezzo?

I received an order for a MEZZO-MEZZO at the shop yesterday, and wasn’t quite sure what I was dealing with. It’s been a second since I'd flat-out not recognized a drink order, so I thought I’d do a little digging.  Some basic Googling revealed that there are two drinks making the rounds with the name MEZZO-MEZZO.