Whitstable is famous for its oysters, which have been collected in the area since at least Roman times.(Wikipedia)
Here is an except from Bargain with the Devil about this.
A drunken Darcy seemed far more obedient than the sober counterpart with whom she was used to dealing. He stopped caressing Elizabeth immediately.
But he seemed more inclined than usual to talk, as well.
He murmured, “Cheap alcohol would not make me drunk. I am simply feeling … happy. Did you know that Whitstable is famous for its … oysters? They tell me that oysters are good for the men. It makes them go … on and on. You know, on and on … with their women. Do you want to try?"
Can oyster really make you go on and on?
Research shows that oyster is rich in zinc, one of the minerals that improve physical performance. So do you want to try too?
Photo from London Evening Standard