NECTARINE CHUTNEY 2 teaspoons canola oil 1 teaspoon yellow mustard seeds 1 small white onion (finely diced) 2/3 cup sugar 1/3 cup white wine vinegar 1 teaspoon finely chopped peeled fresh ginger 1/4 teaspoon dried red pepper flakes 4 whole firm but ripe nectarines (about 1 1/2 pounds total ...