First, do it yourself.
Dried burdock (? ˇ) For long-term storage, the moisture content must be controlled within 5%. You can use the microwave oven at home to dry it. Generally, about 500 grams are put at a time, the first heating is 2 minutes, the second heating is 3 minutes, and the third heating is 1 minute, and the interval between each heating is 5 minutes.
Second, seal and save after drying.
Dried burdock is particularly easy to absorb moisture, and once it becomes soft, it is easy to get insects. Therefore, it is very important to choose suitable packaging materials. The packing bag can be similar to that in burdock tea, Tian Li, with moisture-proof zipper. The bag is thick and black, and there is aluminum foil in it for storage. You can also choose to use a fresh-keeping box to store it. If you don't have these packaging materials, you can also use ordinary plastic bags to pack them tightly, but try not to store them for more than 2 months, especially in summer.
I hope I can help you. Thank you for your question.