Yosaku in Portland, ME, is a gem for authentic Japanese cuisine. I've been a patron for the last 8 years, and their Teuchi Soba, a gluten-free noodle made from 100% buckwheat flour, is a must-try. Unlike other soba that often contains wheat, Yosaku's commitment to quality is evident. With new ownership, there's been a subtle shift in taste, yet the restaurant maintains its excellent atmosphere and flavors. Their sushi and sashimi selection is extensive, including weekly specials. If you're lucky, you might even get to try their Otoro. For fish lovers, their Hamachi-Kama (Grilled Yellowtail Collar) is a delight, offered at a very reasonable price but in limited quantities.