Having frozen ... the clams, you lay them in a flat container and add water with about 3 percent salinity (ratio of 1 tsp of salt to 200 ml water) so that the top of the shell peeks out a little.

The shells of clams ... fresh and frozen, but require a more intense search. Most shellfish have seasons, although cultivated mussels and oysters are sold year-round. As consumers, we're given ...