Pour wine mixture into roasting pan and reduce oven temperature to 350 degrees. (bakinandeggs.com)
Continue cooking peaches and blueberries in wine mixture on high heat until liquid is reduced to a thick syrup consistency, about 10 - 15 minutes. (inthekitchenwithkp.com)
Add wine mixture and broth to onion in saucepan; bring to a boil over medium - high heat. (beefitswhatsfordinner.com)