Sauteed Calf'S Liver With Onions
["4 Tbsp. olive oil", "1 c. thinly sliced onions", "1/4 tsp. dried sage leaves", "1 lb. calf liver, cut crosswise into 1/4-inch strips", "salt and pepper to taste", "2 Tbsp. wine vinegar (preferably white)", "2 Tbsp. finely chopped fresh parsley"]
["Heat 2 tablespoons oil in heavy skillet.", "Add onions and cook, stirring frequently, for 7 to 8 minutes.", "Stir in sage and cook 2 to 3 minutes longer or until onions are limp and slightly colored. Set skillet off heat."]
["olive oil", "onions", "sage", "salt", "wine vinegar", "parsley"]