Since this came up in another topic I thought I’d open this one to remind me to get back to Piperade, which I think is currently the only Basque place in SF. I forgot Bocadillos closed, as did Illuna and Aatxe
There’s also Bask, but it’s sort of Spanish-Basque-whatever. Same goes for Le Chalet in San Rafael. Lots of Spanish places also serve some Basque dishes.
For old-school American Basque, there’s the not-so-old Basque Cultural Center in South SF.
http://www.basqueculturalcenter.com
Once in a while we drive out to Wool Growers in Los Banos.
http://foodtalkcentral.com/t/fresno-bako-99-road-trip-stops-recs/3506/2
https://www.sfgate.com/news/article/Basque-Traditions-Are-Fading-Away-in-S-F-North-2954630.php