Sour Flour has been written about by others in these locations:
Mission Local
SF Appeal
SF Weekly
SF Weekly
SF Weekly
Soul Cocina
Kitchen Side Car
Pearls Kitchen
Hands On Bay Area
Chow
Chow
VidSF
1000th Loaf Celebration
Slightly Delightful
Free Farm Stand
Free Farm Stand
Green Drinks
Table Hopper
Underground Farmers Market writeup by Chow
munch mun.ch
SF Examiner