Introduction: Although various ingredients can be combined freely, some famous home-cooked dishes are particularly beloved, such as beef stew with potatoes, braised tofu with catfish, and stir-fried black fungus with green peppers. Besides cultural factors like tradition, these pairings are also quite scientific in terms of nutrition and taste.
Enhancing Umami.
Representative Dishes: Beef Stew with Potatoes, Braised Chicken with Mushrooms. Yun Wuxin, a popular science writer and a Ph.D. in Food Engineering from Purdue University's Department of Agriculture and Biology, told a reporter from Life Times that inosinate and guanylate in food not only produce umami but also have a "synergistic effect" with glutamate. When used together, the "umami" produced is far greater than when used separately. Potatoes contain relatively high levels of glutamate, while beef contains not only glutamate but also a lot of inosinate and guanylate. When cooked together, the flavor is more umami. If radish is cooked with beef, the umami can only come from the beef. By the same logic, mushrooms (especially shiitake) are rich in guanylate, and chicken is rich in inosinate. During the cooking process, they release free glutamate, creating an intense, rich umami flavor.
Improving Texture and Flavor.
Representative Dishes: Papaya Stew with Pork Ribs, Radish Stew with Lamb. The wonderful thing about ingredient pairing is that it can improve their taste and texture, explains Professor Li Huiming, a nutritionist at Xiangya Hospital of Central South University. Taking papaya stew with pork ribs as an example, papaya contains a special enzyme—papain, the main component of meat tenderizer—which can break down large protein molecules in meat into small peptides or amino acids. This not only improves protein utilization but also makes the meat more tender. The gamey taste of lamb is unacceptable to many people. When cooked with radish, it not only neutralizes the "heat" of lamb but also has the effect of reducing greasiness and removing the gamey taste.
Promoting Nutrient Absorption.
Representative Dishes: Braised Tofu with Catfish, Stir-fried Black Fungus with Green Peppers. No single food has perfect nutrition. Pairing different ingredients not only complements their nutritional value but also promotes the absorption of certain nutrients. Tofu is low in methionine but high in phenylalanine, while fish is the opposite. When eaten together, they achieve a good amino acid complement. More importantly, tofu is rich in calcium, and the abundant vitamin D in fish enhances the body's absorption of calcium. Therefore, braised tofu with catfish is a great calcium-rich home-cooked dish. In addition, vitamin C promotes iron absorption, making stir-fried black fungus with green peppers a classic iron-rich dish.
Reducing Harmful Substances.
Representative Dishes: Steamed Pork with Preserved Vegetable, Stir-fried Bacon with Green Peppers. The cholesterol and saturated fat in fatty meat deter many people. However, dietary fiber can help expel cholesterol from the body, reducing the harm of saturated fat. Dishes like steamed pork with preserved vegetable and soybean stew with pork ribs follow this nutritional principle. Nitrite reacts with protein decomposition products under acidic conditions to easily produce carcinogenic nitrosamines. Vitamin C is the most effective substance in inhibiting the conversion of nitrite to nitrosamine. Therefore, although bacon contains a significant amount of nitrite, if cooked with foods rich in vitamin C, the formation of harmful substances can be reduced. A typical example is stir-fried bacon with green peppers.