"I thought I'd try Patronus' new restaurant. I hear he does remarkable things to oysters." - Aziraphale
This recipe is based on how oysters (ostreis) were made in Ancient Rome! Oysters were eaten both raw and cooked (boiled or fried), and Romans loved their seasonings like black pepper and lovage (easy subsitute - parsley). You'll also find garum in ancient Roman cooking, which is sometimes substituted as liquamen or soy sauce.
You can just open oysters with a flat head screwdriver (or if you're a professional, with an oyster knife). However, an easier way is to quickly boil them and then transfer to an ice bath.
♦︎ Good Omens ♦︎