Josh's supervisor who is from London said it was the best sangria since Spain! A half carafe is $12 and fills three glasses. They also have a really delicious breakfast for under $5--oatmeal with fresh fruit and other Spanish favorites.
Note that they're only open past 4 pm on Wed-Fri. On Sundays, they are closed.
Stable cafe
http://www.yelp.com/biz/stable-cafe-san-francisco
Folsom between 17th and 18th
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