Yamo could be a restaurant but it's more a rectangular area with about 10 bar stool seats at the counter...and that's about it. At the counter you are face to face with the open stove that can host anything from curry noodle to chicken to rice and... the grey haired lady manning the operation.
At any given point there are only 3 ladies cooking, taking orders and providing you with cutlery, napkins and your food. The grey-haired lady cooking behind the counter screams a lot, sometimes in jest and sometimes for real at customers, depending on what is asked of her.
This restaurant for some reason felt like it belonged in NYC - like a typical NYC hole in the wall. It's in a way a testament to SF's spirit and how people make do with anything - whether it's a small restaurant or a tiny apartment to live in. As for the food - the tea leaf salad is crunchy, sweet and spicy all at once - fabulous! The chicken noodle soup is also very different with a splash of coconut. The house noodles are tasty/oily while the chicken noodles are not so tasty and oily. Skip the spring rolls.
Tip: the pegs on the wall allow you to hang your jackets/purses since there is no other space to keep them other than your lap.
There's no website but check out Facebook and Yelp for menu details.