Mark Usewicz Author's Website Mark Usewicz is the co-owner and head fishmonger of Mermaid's Garden, a sustainable fish market in Brooklyn, NY. Mark trained as a chef in France and went on to helm kitchens in Boston and New York City before founding Mermaid's Garden with his wife in 2012. About Martha Stewart Martha Stewart, a Dotdash Meredith Brand, teaches and inspires over 7 million readers a month with tested-until-perfected recipes, elevated home and entertaining ideas, and creative DIY projects. Our content is written by experienced journalists and fact checked for accuracy. Learn more about us and our editorial guidelines.