1. 1. After picking the blooming Sophora japonica flowers, dry them in the shade, put them in plastic bags and put them in a dry and ventilated place. You can soak them at any time. Be sure to dry it in a cool place without direct sunlight.
2. Second, put it in a plastic bag (preferably a sealed bag) to suck out the air inside. It is better to have an air pump or a vacuum cleaner. Then it's sealed. Freeze in the refrigerator. If it's a small bag, take it out if you want to eat it. It's been a long time, just like it was just picked.
3. Third, you can also blanch Sophora japonica in hot water, then clean it, put it in the refrigerator and freeze it, so you can take it out when you want to eat it.
Matters needing attention
Remember to put the dried acacia flowers in a cool and dry place to avoid mildew, so that you can't eat them and waste them.