One of the city 's attractions is the shopping center around the Place Darcy and Rue de la Libert ? ? , where you can hunt for such regional delicacies as the famous mustards ; pain d ' ? ? pices ( gingerbread ) ; and cassis , the blackcurrant liqueur that turns an ordinary white wine into a deliciously refreshing kir .
Blackcurrant liqueur can also be added to red wine .