Ever since it opened last year, Kai Zan has quietly become one of Chicago’s favorite BYOB sushi spots. Tucked away in the smallest, most demure little nook of a shopping strip along west Chicago Avenue, the space is hard to spot. But when you enter the cozy little restaurant – dominated by the tall sushi bar – you’ll instantly feel transported. Brothers Melvin and Carlo Vizconde quietly slice and assemble from behind the bar; they offer standard nigiri and sashimi, as well as some rolls, but best bet is to let them cook for you, omakase style. One of their more interesting presentations, called the “Orange Rush,” marries sashimi (salmon and scallop) with the idea of a maki, since they are rolled together, but there’s no rice. Slightly torched, kissed with fresh citrus and a few droplets of unagi and wasabi sauce, this little knob of seafood packs a wallop of flavor. Definitely something you should eat.