I did a search and nothing came up, which was a little surprising.
SF is known for it's sourdough, and I've heard of Boudin but since you can buy it at the airport that makes me a little skeptical of it's quality.
I'd like to ship a couple different loaves to my stepmom, as it's all she could talk about when she found out I was moving here. I live in the Mission, but I don't mind going anywhere in the city to get something really special. I don't know if Tartine has sourdough, but I plan on calling them after work to find out.
Any suggestions are most appreciated!