"Deo Optimo Maximo" ("To God, most good, most great")
That's the company motto.
Benedictine liqueur was originally made by monks. In the late 1870s, Alexandre La Grande of Fecamp, who had found the ancient recipe in a family trunk, started to make it for the public. the recipe made him a very wealthy man. I don't remember ever drinking it, but I read the taste is similar to very sweet cognac. The reipe includes odd bits like lavender, thyme, cardamom, juniper, and vanilla. That doesn't sound at all tasty.