Chef-owner Bruce Kalman of Pasadena's Union infuses the vinegar with serrano chiles, then pours the cooled brine over perfectly shaved vegetables. Mustard seed and, of course, a little bit of dried oregano give it extra oomph.
Harissa is a spicy red pepper sauce commonly used in North African cuisine. It's easy to make and has become my new favorite condiment. Full of flavor and spice, you can use it on practically anything!