Yeah. Technically I suppose you could describe it as a fish sauce but definitely more on the umami and vinegar side. I'm also not sure the degree to which Worcestershire Sauce is especially a mainstream American condiment. I have a jar in my cupboard. Not sure how many houses do.

Worcestershire is a mainstream condiment in America. There is a pretty diverse range of American cuisine that has it as a common ingredient.

You don’t use much when you use it but I somehow go through a bottle every couple years.

But barbecue sauce with it absolutely is