Kikkoman® Plum Sauce. Restaurant series. Great for stir-fry and dipping. Net Wt 9.3 oz (265 g). Plum sauce, sometimes called Duck Sauce, is a traditional condiment with sweet, fruity-ginger flavors... an excellent dipping sauce that complements grilled and deep fried foods. Partially produced with genetic engineering. Kikkoman is a registered trademark of Kikkoman Corporation. Visit us at www.kikkomanusa.com.