From Mrs. Beeton’s Book of Household Management (1861), a recipe for “oyster sauce”:
…put in the oysters, which should be previously bearded, if you wish the sauce to be really nice…
…A more economical sauce may be made by using a smaller quantity of oysters, and not bearding them before adding them to the sauce…
In this context, what is meant by “bearding” the oysters? Oysters I have met do not, as a rule, have beards, and even mussel-like beards would not be relevant to the quality of the sauce given that the oysters are already shucked.
