I went to the San Francisco Street Food Festival on Saturday. Had a terrific time and ate until my belly was bursting. One of the highlights was a little drink called a Shrub N' Soda. It was so good (and non-alcoholic too) that I had to search the web for a recipe. Turns out it's a vinegar based syrup which would account for it's lovely tang. And it seems easy to make, basically simmer fruits in a sugar syrup and then add the vinegar. Serve up with club soda or seltzer.
The festival was great and hope you were able to attend. I avoided the long lines by going way early and doing recon on the trucks that I wanted to hit. It was a blast! See you guys at the festival next year!