2. Generally, steamed Astragalus seeds should be boiled in water and steamed in boiling water for eight minutes. The heat only needs to ensure that the water will not overflow because of boiling. Steamed astragalus seeds need to be soaked in salt water for two hours before they can spit out sediment. It is best to wash them with edible alkali to remove the fishy smell. You can first boil the seeds in boiling water for about 40 seconds, take them out immediately, put them in a steamer, sprinkle with garlic and ginger powder and steam them. After the pot. Then heat it with the sauce of rice wine, sugar and soy sauce and pour it on.