I live a far distance from any body of salt water, so the only mussels available are packaged frozen mussels. I have always heard that cooked mussels must open or they are not good to eat, but when ...
I bought 1/2 pound of mussels and cooked them in a cast iron skillet with a little white wine and some shrimp stock on boiling heat. Almost all of them opened after about 15 minutes, some did not. ...