Ingredients

  • 4 poblano chiles
  • 4 Anaheim chiles
  • 1 large sweet onion, sliced 1/2 inch thick
  • Vegetable oil
  • 1/4 cup light brown sugar
  • 1/4 cup each of whole-grain mustard and Dijon mustard
  • 2 tablespoons cider vinegar
  • Salt and freshly ground pepper

Method

  • Light a grill.
  • Rub the chiles and onion with oil and grill until charred, 8 minutes.
  • Peel and seed the chiles and cut into thin strips; chop the onion.
  • Transfer the vegetables to a saucepan.
  • Add the remaining ingredients and bring to a simmer over moderate heat, then serve.