I just got back from vacation in Arizona, where I tried duck for the first time. It was great. Served with mashed potatoes vegetables and a balsamic reduction which I loved. Now I understand that this is balsamic vinegar reduced, but I'm not really sure how to do it. Do you just pour the vinegar in a pan and let it reduce? Is there anything else that goes in it? Has anyone ever tried this before? Would love to hear any ideas on the subject.