I walked in la Maison de Mademoiselle Dumpling the day it opened. I usually opt for getting frozen dumplings (which is not on the menu) and is tax in. There's a dope little window that showcases a wrapping queen. (2 weeks ago, there were 2 wrapping queens given how popular this dumpling joint has become).
When I do chose to eat in, they'll serve you unlimited hot tea. And I think some pickled dishes like they serve in Korean restaurants.
There's also a few shelves with some goodies from Japan (and Pocky for sure).
So good. Simple menu. Good tasting dumplings.