After more than 170 years, the original recipe for Lea and Perrins Worcestershire Sauce has been revealed. It was found in notes dating from the mid-1800s that were dumped in a skip by the sauce factory. Brian Keogh, a former Lea and Perrins accountant, discovered the notes, which were neatly written in sepia ink in two leather-bound folios, and rescued them.
As it happens, Worcestershire Sauce is related to Asian Fish Sauce. They both use fermented fish. Go figure.