Sushi Koshi is a Japanese and Korean fusion restaurant located in Montclair, NJ. The menu offers a variety of sushi rolls, sashimi, soups, salads, and appetizers like Avocado Fries and Gyoza. Customers praise the freshness and flavor of the dishes, with standout items like the JJ Roll and Tuna Tataki receiving high ratings. The restaurant is described as small, charming, and bustling, with prompt service and a tranquil atmosphere. While some customers had minor issues like cold gyoza or flies in the dining area, overall feedback is positive, with many planning to return and explore more of the menu. With options for vegetarians, vegans, and meat lovers alike, Sushi Koshi provides a diverse dining experience for all.