Glaze: In 1 quart saucepan over medium heat in 1 tablespoon oil, cook onion until tender. Add other glaze ingredients, cooking and stirring until mixture boils. Reduce heat to low and simmer, uncovered, for 5 minutes. Remove from heat and set aside.
Baste turkey often with the glaze during last 30 minutes of cooking - whether roasted in oven or grilled on barbecue.