I went to the new Farmer's Market in La Habra (opened in May). Although it is small still, they had some interesting vendors.
There was a vendor selling smoked/bbq'd bratwurst--really tasty! There was also a gal selling what looked to be homemade tamales and salsas.
The market is on La Habra Blvd @ Euclid at the La Habra Community Center, Fridays 9-1.