I was introduced to this classic cocktail by the late legendary editor of Forbes: Jim Michaels. Named after a WW I artillery piece, it is indeed deadly. I have been guzzling them this past week out of some Subconscious alcoholic homage to the Tour de France. Recipe: Gin, lemon juice, simple syrup, prosecco over ice with a twist. I have a suspicion this could easily become the summer of retro cocktails. Is that wrong?