Add some tangy crunch to your tacos, with this easy to make relish.   Onion-Chili Relish Recipe Type: Relish Cuisine: Mexican Author: Lemon Prep time: 10 mins Cook time: 2 hours Total time: 2 hours 10 mins Serves: 1 cup Ingredients 1 medium white onion 1 or 2 fresh jalapeños (I used 2)