Just wondering if anyone knows where I can find Echire (or similar quality) butter in SF. I know Lurpak is pretty widely available, and I've recently tried Kerrygold and some other cultured butter from Vermont. I just haven't been able to find the rich, cultured, lactic flavor that I'm really looking for. A few restaurants that I've been to seem to source excellent butter but I'm not sure what brand they are using. Hog island at the ferry building, for instance, has great butter.
Any help / recommendations would be greatly appreciated!!