My Dumplings in Milpitas Square is a contender for closest Bay Area XLB to Din Tai Fung. They’re small, tightly wrapped with plenty of soup, have a translucent skin, and the white meatball is solid with some give. Excellent construction with no danger of popping- I count 16 pleats. The pleating portion is a tad rigid. Soup has body and a balanced flavor. $8 for 8.
For a XLB crawl, these would be a good counterpoint to the XLB at Shanghai Dumpling in Cupertino, which have a stronger flavored broth and larger size.
They have SJB on the menu, but weren’t serving them when I visited.
