* 2 tablespoons vegetable oil * 4 garlic cloves, very finely chopped * 3 red Thai chiles, very finely chopped * One 2-inch piece of ginger, peeled and minced * 1 small red onion, finely chopped * 2 tablespoons salted roasted peanuts, coarsely chopped * 2 small quinces—peeled, halved, cored and cut into 1/4-inch dice (see Note) * 2 tablespoons fresh lime juice * 1 tablespoon sugar * 1 teaspoon salt * 1 tablespoon coarsely chopped mint * 1 tablespoon coarsely chopped cilantro