Vidalia Sweet Onions Relish

4 large sweet onions, chopped

2 tablespoons canola oil

3 garlic cloves, minced

1/3 cup brandy

4 ripe firm tomatoes, peeled, seeded and chopped

1/2 cup golden raisins

1/3 cup packed dark brown sugar

1/4 cup cider vinegar

1 teaspoon mustard seed

1/2 teaspoon salt

1/2 teaspoon ground mustard

1/2 teaspoon crushed red pepper flakes

1/4 teaspoon pepper