As an ingredient, this additive doesn't have the best reputation and Mission Chinese Food is throwing fuel on the fire by offering an MSG option in shaker form. The San Francisco Chinese food chain recently tweeted a picture of their new MSG shakers so people can add it if they choose. This is just one of the latest controversial stunts by the restaurant, who also embarked on a journey to become the most hated restaurant on Yelp and made a number of anti-gluten-free remarks.
Despite a bad rap, there are no proven health effects caused by MSG, which actually occurs naturally in a number of foods. Mission Chinese Food's "authentic" MSG option clearly sides with this point of view.