DS went here, and loved it.
https://www.dumplingdaughter.com/ (https://www.dumplingdaughter.com/)
I was at a get together a few months ago, and someone picked up takeout from there. I remember there was something that was really, really good, but don't remember what it was. And since it wasn't a concern for me or anyone who was there, I had no idea whether they were allergy-friendly.
While they are not sesame free, they accommodated DS with a clean wok, clean implements, etc. He doesn't appear to be sensitive to minute traces of sesame, so he was comfortable with it. (I'm not, but he is an adult, and it's his choice.)
He was over the moon, since not being able to have Asian food has always been a sticking point for him.
I should post info about Pei Wei that is really encouraging. I learned it two weeks ago. I'll find or start a specific PW thread.
I need one up north of Boston! Sounds delicious
I'd probably take the 2.5 hr bus/T trip to Cambridge just to eat here. Next time I fly out of Logan!