Ingredients

  • 1 tablespoon expeller-pressed vegetable oil
  • 1/2 teaspoon brown mustard seeds
  • 3 garlic cloves, slivered lengthwise
  • 1/2 teaspoon cayenne
  • 1 1/4 teaspoons ground turmeric
  • 5 ripe plum tomatoes, peeled, seeded, and finely diced
  • 1/2 teaspoon kosher salt
  • 1/4 cup distilled white vinegar
  • 1/4 teaspoon sugar

Method

  • Heat the oil in a medium-size heavy nonreactive pot over medium-high heat.
  • Add the mustard seeds and garlic, and cook until the garlic is turning light golden brown and the seeds are popping, about 2 minutes.
  • Add the cayenne and turmeric.
  • Cook for 10 to 20 seconds, and then add the tomatoes, salt, vinegar, and sugar.
  • Simmer for 15 minutes, or until the tomatoes are soft and the relish has thickened slightly.
  • Serve hot.