1 Combine The Rosemary, Brown Sugar, Black Pepper, And Salt. Rub The Mixture Over The Duck Breasts. Cover And Chill 2 Hours. Rinse Duck With Cold Water, Pat Dry. 2 If The Duck Breasts Are Very Fatty, Score The Skin Side With A Sharp Knife. Be Careful Not To Cut The Meat. Lay The Duck Breast Halves Skin Side Down In A Cold Saut