Tools/materials: pig heart, ginger, longan, lotus seeds.
1, put the sliced pig heart into cold water, add ginger slices, and boil over high fire.
2. Add auxiliary materials. After the water is boiled, pour in longan, lotus seeds and red dates, turn to low heat and cook for another 50 minutes to cook pig hearts.
3. Add Lycium barbarum, open the lid, add Lycium barbarum, add salt and cook for another five minutes.
Brief introduction of longan
Longan is a plant of Sapindaceae, one of the four most valuable fruits in southern China, also known as Longan, Litchi Nu, Asian Litchi and Swallow Egg. Longan is native to the south and southwest of China, and its longest life span can reach more than 400 years. Fruit can be eaten raw or processed into dried products, and meat, core, skin and roots can be used as medicine. The fruit ripens in July-August, with yellow-brown fresh fruit and rich nutrition. It has been loved by people since ancient times and is regarded as a precious tonic.
Longan grows in the south subtropical region, likes warm and humid climate, can endure short-term frost, and will not freeze to death in a short time at a low temperature of 0-4 degrees. The annual average temperature in Putian, Fujian, China is 20-22 degrees, and that in Sichuan is about 18 degrees. Short-term low temperature in winter is beneficial to the differentiation and formation of longan flower buds. The ancients compared longan, a round fruit, to various eyes. The big longan is called longan, the middle one is called tiger eye, and the smallest one is called ghost eye, but modern people call it longan.
The above contents refer to Baidu Encyclopedia-Longan.