Some chefs use natural sea shells harvested from oysters and clams to bake their seafood dishes, while others use metal shells for their baked culinary creations. Another type of shell for baking is one made specifically for taco salad.
Bed Bath & Beyond sells natural scallop seashells from the shores of Ireland and Scotland. They are good for baking and also make an attractive presentation. WebstaurantStore sells foil clam shells that are suitable for preparing dishes beforehand because they are safe for the freezer. These shells are disposable, making for easy cleanup. Jet sells shells that create the perfect taco salad holder out of a tortilla.