Nissin Ramen Noodle (XO Sauce Seafood Flavor) in 4.7oz (133g) pack. XO sauce is a classic sauce made in Hong Kong for Cantonese cuisine in the 1980s. The flavorful sauce is made with a medley of fried scallops, dried fish and shrimp and then cooked with onions, garlic, and chili peppers. The XO sauce is essential ingredient to many Cantonese dishes such as tofu and chow mein. Product of Hongkong.