Spicy Corn Relish with Poblano and Red Jalapeño

Ingredients

• ⅔ cup cider vinegar
• 2 tablespoons water
• 2 tablespoons sugar
• 1¼ teaspoons pickling salt
• ½ teaspoon cumin seeds
• ⅛ teaspoon ground coriander
• 1 poblano chile, stemmed, seeded, and cut into ¼-inch pieces
• 1 red jalapeño or Fresno chile, stemmed, seeded, and chopped fine
• ½ small onion, chopped fine
• 2 ears corn, kernels cut from cobs (1½ cups)