Add the cream, Worcestershire sauce and mustard. Season with salt and pepper. Boil for 1 minute, then add the lemon juice, chopped watercress and any duck cooking juices. Reduce the heat and ...

Companies like W.Y. Industries started mass-producing packets of soy sauce, mustard, hot sauce, and duck sauce, and by the 1990s, they were making hundreds of millions every year. Even though it's ...