When purchasing mussels look for tightly closed shells. They might gape slightly but should close when tapped. Shells should be clean, unbroken, and moist. Mussels should have a fresh scent, not a strong fishy odor. Refrigerate live mussels, covered with a moist cloth, in an open container up to 2 days.
Chile peppers contain oils that can irritate your skin and eyes. Wear plastic or rubber gloves when working with them.