Because if the corn is steamed, the cooked corn will be sweeter. If the corn is steamed, the sugar in the corn can stay in the corn well without loss, so the steamed corn will be sweeter when eaten.
When choosing corn, if you think there are more stalks in corn, you can choose less when you buy it, but don't have none at all. Because there is a little stalk in the corn, the food is normal.