Master chef Nobu Matsuhisa’s signature is keeping it simple: if you’ve ever had the pleasure of that miso-glazed black cod, you know what we’re talking about. His Swiss Chard Oshitashi, a winter twist on Japanese sesame-soy boiled spinach, might just be the perfect side dish.

Thin flakes of dried bonito, a fish that’s related to mackerel and tuna, have been used as a briny, faintly smoky seasoning in Japan for centuries. Bonito flakes are available at Asian markets, many supermarkets and Asian Food Grocer.

Courtesy of Martha Stewart Living