If you cook it directly, it is recommended to buy it from Zhejiang. It is common to see a big bag with ten small bags, each of which is 20 grams. This kind is not only convenient to eat, but also a little sweet and delicious for southerners.
If you want to use it as a raw material for cooking, it is recommended to buy bagged spherical mustard tuber in Fuling, Sichuan, which is delicious and affordable.
For reference only.