2. Take out the longan and shake it. If you can't hear the sound, it means that the longan is round. If you can still hear a slight noise after shaking, it means that the longan meat is relatively small. It is suggested to buy the former one.
3. If you encounter longan without shell, first look at whether the meat is round, and the thicker the meat, the better. The color of the fruit is best brown. If the color is white or light, it is not recommended to buy it.
Second, the method of selecting high-quality longan 1, look: generally, it is appropriate to have large particles, thick meat, uniform shape and mellow taste. The shell surface of the casing is round and flat, and the color is yellow and brown. The shell surface is uneven, and those with oil brown spots indicate gradual mildew; Those with small white spots on the shell surface and pedicle have moldy meat; The shell is dark, indicating that the meat has dark mold or dry mold; There is a small round hole at the top of the shell surface, which indicates that there are wood borers. Peeling to see the meat quality, the shredded pork is thick, the color is yellow and bright with tiny wrinkles, and there is a circle of bright red meat head at the position of fruit stalk. The quality is good, the meat quality is thin, the color is yellow and there are no wrinkles.
2. Shake: A good longan is fat with its meat, and the gap between the meat and the shell is small, so it does not ring when shaking. For example, longan produces a significant sound when shaking, and the quality is generally not very good.
3, taste: the meat is pink and Huang Liang, crisp and soft, sweet and fragrant, and the quality is good when chewing without residue; The sweet taste is not enough, followed by those who are malleable and chewy; The taste is dry and bitter because the cake is baked too much or the old goods are baked again.
4, bite: bite the longan core, easy to break and the sound is fresh longan; Tough, broken and silent people are inferior.
5, roll: put the longan on the table, flip it with your hand, it is not easy to flip it; Easy to flip is inferior.
Third, the preservation of longan longan can be frozen and stored. If the indoor temperature is too high, it is likely to cause longan germination or mildew. Putting longan in the frozen area of refrigerator can inhibit the life activities of longan and avoid the growth and development of germs. Save a week.
Longan can be stored in a dry way. Dry fresh longan to reduce its moisture, which can prevent longan from sprouting. Then, dry longan is stored in a ventilated and dry area to prevent wet and cold and mildew. The storage time of longan can be increased to 6 months.