Fantastic authentic Japanese place in Newark, right on the other side of the Dumbarton from the Peninsula. The restaurant is in a strip mall by Arby's and kind of a hole in a wall, but Yoshi-san and his mother have a great izakaya menu on the wall. Unfortunately for many, it is in Japanese, though they'll give you an English menu, and will answer questions from behind the bar.
Yoshi-san has a decent selection of sake and will let you taste before pouring it into a "masu", or wooden box. He also has shochu, all "imo" or potato base.
We started with edamame, ika geso (fried squid legs), and a grilled whole mackerel. I had to order ankimo (monkfish liver), which is "foie gras of the sea" per Kenneth. Yum. Off menu, they also have home made shiokara, a salty-spicy squid 'pickle.' They also make a good home made gyoza (dumpling).
For sushi, we had some ikura (salmon roe), uni (sea urchin), and really amazing toro. Also worth getting the California roll with real crab meat.
Yoshi-san gave us ice cream to finish - green tea, azuki (red bean) or vanilla are the choices.
Not the speediest so I would expect to take some time there. But worth it!
39261 Cedar Blvd (between Magazine & Mowry Ave), Newark, CA 94560