Steaming cooked food with saffron and eggs can cure palace cold.
If you want to buy saffron, I suggest you go to a local drugstore or a Chinese time-honored drugstore, such as Tong Ren Tang and Tong Ren Tang, where the saffron costs 70 ~ 100 yuan per gram. The situation varies slightly from place to place. Although the price is higher, it can be guaranteed to be genuine. Other small pharmacies have no saffron or no real saffron. Many small pharmacies sell saffron as saffron, and some sell it directly to you.
If you are familiar with online shopping, I recommend you to look at the "Saffron Beauty Health House" on Taobao. They have 8 years of experience in the saffron industry and have their own saffron planting base. The saffron they sell is of high quality and low price. Each gram of Iranian imported premium saffron 25 yuan, each gram of domestic premium saffron 35 yuan. You can go and have a look.