Be sure to chop up the onions. If you fry onion strips, cut as many as possible. Make sure the onion is dry, that is, there is no excess water. The wok is hot. When you see smoke in the wok, you pour the oil in. When you see the oil bubbling, pour in the onion and keep stirring. The fire must be set to maximum. When you see the onion change color, it proves that it is almost ready. If you want to eat old onions, you can continue to stir fry, otherwise you can go out of the pot.

Onion (scientific name: onion? L.), alias garlic, onion, emerald onion, onion, Dutch onion, dictyophora, etc. It is a biennial herb of Amaryllidaceae and Allium. Onion contains prostaglandin A, which can reduce peripheral vascular resistance and blood viscosity, and can be used for lowering blood pressure, refreshing, relieving stress and preventing colds. In addition, onion can also scavenge oxygen free radicals in the body, enhance metabolism, resist aging and prevent osteoporosis. It is a health food suitable for middle-aged and elderly people.

Onions are widely distributed in China, and cultivated in both north and south. It is one of the main vegetables in China. Onion producing areas in China mainly include Fujian, Shandong, Gansu, Inner Mongolia and Xinjiang.

Onions originated in Central Asia or West Asia, and there are many different varieties, which are used in foods all over the world. There are pictures of harvesting onions in ancient Egyptian stone carvings in BC 1000, and then spread to the Mediterranean region. During the Western Han Dynasty, Zhang Qian communicated with the Western Regions and brought back many species from the Western Regions. At that time, there were records of planting onions in the western regions. After the great geographical discovery, it spread from Europe to the world. 16th century, introduced to North America. /kloc-spread to Japan in the 0/7th century. /kloc-in the 0/8th century, Lingnan Miscellanies recorded that onions were introduced to Macau by white Europeans and planted in Guangdong.

According to the information of Checheng Town Office, in 19 12, a Japanese primary school teacher who taught in Tamsui introduced onions from Japan to Taiwan Province Province for the first time. Starting from 19 18, the Agricultural Laboratory of Governor's Office of Taiwan Province Province tried to plant onions all over Taiwan Province Province, but the effect was not good.