There are pictures of the food on a long table and on the wall above it. There are little squares of paper with the name of the food, and things like “extra noodles” or “add egg” and “here or togo”. You get one piece of paper for each item you want, and then fill it out, and give them your stack of paper.
Oh nice! I may have to drive there just to check it out. One of my wife’s and my favorite restaurants in SF was a Burmese restaurant called Mandalay.