70-90 cooked mussels in a bag. They're perfect for mussels in blue cheese sauce recipe! One bag would make 2 main meals. So here's the thing with frozen mussels - some people worry that they don't always open and close like live mussels. Frozen mussels that don't open when cooked can just be popped open with a twist of a knife. Remember that frozen mussels were cooked and frozen straight out of the water so they have not had to survive for 5-10 days out of the water and they haven't had the chance to die on their way to your pan. So these beautiful mussels from Ireland are absolutely superb quality and only need to be reheated.