Fresh corn can be directly frozen. Remove the old outer skin of fresh corn, leave two or three relatively tender skins and corn whiskers, seal them with fresh-keeping bags and put them into the refrigerator for cryopreservation, which can prolong the shelf life of fresh corn and effectively maintain the moisture in corn. When you need to eat, just take it out and thaw it. How to choose corn depends on Color: Generally speaking, waxy corn is white and sweet corn is yellow or color.
Look at the leaves: the fresh corn leaves are cyan, and the over cooked corn leaves are yellow and dry.
Pinch corn kernels: fresh corn kernels have sufficient water and full grains. You can pinch water with your fingernails, and the over cooked corn will shrink in. （XianYuMiKeYiZhiJieLengDongBaoCunMa）