Meanwhile, in a medium-size saucepan, heat oil over medium heat. Add onion and cook for 5 minutes. Off heat, stir in preserves, bourbon, vinegar, brown sugar, garlic salt, red-pepper flakes and ginger. Simmer 10 minutes, uncovered, stirring occasionally. Mix together cornstarch and 1 tablespoon water. Stir into saucepan; simmer for an additional minute. Remove from heat.