Manufactures of "The Original and Genuine Worcestershire Sauce" prepared , according to the bottle, with a "unique secret recipe."
John Lea and William Perrins were chemists, commissioned by Sir Marcus Sandys to make the condiment that bears their names. A commercial on TV here says that any meal can be improved by "a couple of drips from England."
I use it in cooking a tomato-based macaroni and cheese dish.
Incidentally, it's a pretty good tarnish