The blanching time for bean sprouts is related to the type of bean sprouts, generally mung bean sprouts are blanched for a shorter period of time, about 2 to 3 minutes, and soybean sprouts need a longer blanching time, about 3 to 5 minutes.

The mung bean sprouts are blanched for about 2 to 3 minutes because the bean sprouts are smaller; the soybean sprouts need a slightly longer cooking time because the bean sprouts are larger. To determine whether the bean sprouts are cooked, you can smell or taste, and generally cooked bean sprouts do not have a fishy odor.