Plum sauce is a viscous, light-brown sweet and sour condiment. It is used in Cantonese cuisine as a dip for deep-fried dishes, such as spring rolls, noodles, and deep-fried chicken balls as well as for roast duck. It is made from sweet plums or other fruit such as peach, pineapple or apricot, along with sugar, vinegar, salt, ginger and chili peppers.
Detroit-style plum sauce is a popular take on Chinese-American plum sauce found in most Chinese restaurants in the southeastern Michigan area. It is a watery, sweet, vinegar-based sauce that offers a much stronger flavor.