in
some gravy, with pepper and salt; thicken it with a
little flour, boil it up, put in the mussels with their liquor,
and let them be hot; then pour them into your dish, and
serve them up. There are some mussels of a pernicious
quality; to know which, when you stew them, put a half
crown into the sauce-pan, and if it is discoloured, the mus-
sels are not wholesome.