There seem to be reviews for other Karma restaurants on this app, but not the Concord location. Based on the menus, I believe the Andover location is part of the same restaurant group. Both have a fairly large gluten free menu and can also make recommendations for altering regular menu items. The bartender Steve seems to know just about every ingredient and was quick to point out what was safe and what was not. They have Tamari for dipping and the sushi is always fantastic. It’s a little pricey, but good for a splurge.