Here's one of my pet peeves. Whenever I've ordered shumai at a Japanese restaurant in this area, what comes out of the kitchen is heated, industry-grade, frozen shumai like the AjiNoMoto packs that one can buy at a store. It's true that I can get Chinese-style siumai, fresh-made, at dim sum places in town, but they are qualitatively different. The Japanese (or more specifically Yokohama) take on this originally Chinese dish is more delicate--smaller size, thinner wrapper, less chunky filling. I haven't tried shumai at many Japanese restaurants, because I got discourage after a few tries. So if anyone knows of a place that serves superior hand-made examples, please post.