Southern US here. It's not Worchestersher sauce?
The accent here means that the phrase "pork pie" becomes "poo-wuk paaah" (stress on "poo" and "paaah") and the related steak-and-kidney-pie (which is served upside-down) was called a "babby's edd" (although I'm not sure if that's actually from nearby Bolton and is less about pronunciation I guess).
“Wooster sauce.”
Leicester (in Leicestershire) is a larger English city with the "-cester" suffix, meaning a Roman fort. The name is used in the US as a personal or family name: Lester.
Where the pronunciation is "ch", it's also spelt that way, as in Manchester.