Stew over water with slow fire can make the temperature not too high and destroy the effective nutrients in bird's nest. Definition of water-proof stewing \x0d\ technique: the technique of putting soaked bird's nest raw materials into a container, adding soup and seasoning, sealing, putting them in a water pot or steamer, and heating them with boiling water or steam for a long time. \x0d\ process flow: selecting materials → cutting → blanching → adding soup to a container for seasoning → placing in a water pot or steamer → sealing → heating and stewing with boiling water or steam → cooking \x0d\ mechanism, key points and characteristics: this technique emphasizes sealing and heating, putting bird's nest raw materials in a water pot or steamer, and adding a cover to prevent air escape. Because it is heated gently, even though the heating time is long, the soup will not be muddy and muddy, and it can absorb the flavor decomposed from the raw materials, making the soup and vegetables have the characteristics of mellow, delicious and refreshing. It should be noted in the specific operation that whenever the container is stewed in a water pot, a large amount of water should be added to the pot, but the water level should be lower than the mouth of the container to prevent the pot water from overflowing into the container when boiling. Cover the lid tightly to prevent air leakage. After the water is boiled, use a small fire to let the heat of the water continuously pass to the raw materials through the container, so that it will be cooked by heating. When stewing, it is necessary to ensure that the pot cannot be cut off from water. If the pot is short of water, it must be supplemented with boiling water in time until the raw materials of bird's nest are cooked. Wash the bird's nest, mainly by dipping. The water that has just been soaked for1-2 hours should be poured out, and impurities such as swallow hair should be cleaned during the period; Then soak it in clear water for1-2 hours. At this time, the amount of water to be soaked should be controlled, and it is generally enough to reach the surface of bird's nest. Finally, even the soaked water is stewed with slow fire to keep the original flavor and nutrition of bird's nest. \ x0d \ x0d \ When the bird's nest is in urgent need, it can also be soaked in warm water, which can be taken in 30-40 minutes, but this quick method is not suitable for blood swallows. \x0d\\x0d\ stew time is determined by two factors. First, it depends on the quality of the bird's nest itself, depending on the thickness and humidity of the bird's nest. Generally, it takes 6-8 hours. If it is a blood swallow, it takes twice as long. Second, it depends on people's physique. In order to facilitate absorption, people with weak physique, such as the elderly and patients, spend more time stewing bird's nest than the routine 1 hour, that is, 7-9 hours. \x0d\\x0d\ It is best when the finished product is soft, smooth, elastic, glittering and translucent, and soft and continuous.