Ever since I was a little kid, I ate beef jerky from Jackson Market. Still one of my favorites, I can't help but stop by every once in a while to pick up one of their 1/2 lb bags.
The beef jerky is slightly moist and sticky sweet. I believe it is marinated in a soy based liquid. The beef has just enough fat running through it to make it oh so tasty.
If you ever go here, once you walk through the doors, the first thing you'll noticed is how bare the market is. There is hardly anything on the shelves. If you want beef jerky you ask the lady behind the counter and she will get it for you. I think 95% of their sales is beef jerky.
You'll find this place in San Francisco on Jackson St, cross street is Jones St.