In my area there is a chain of Belgian restaurants which has an “all-you-can-eat” mussels night for like $20.  I like to do this once in a while despite the danger of toxins in the shellfish.  I can eat 3 pots of mussels before I get full and they give you a free “Stella” and a basket of Belgian fries.  Covered in sea salt.  Totally awesome!  Full of zinc!  Naturally-occurring zinc.