Possibly not a lot:
The first book I published, which kind of got me started on this, was “SteamDrunks: 101 Streampunk Cocktails and Mixed Drinks”… It was basically to shut up a lot of my steampunk friends, who’d bring a bottle of absinthe to a party and be like, “This is just like what they were drinking in the 1890s!”
I have a masters in history: “No, it’s not. Even Byron didn’t drink that stuff straight!”
Byron? Absinthe? 1890s?