Sweet corn comes in a range of kernel colors: yellow, white, and bicolor (yellow and white).
Look for fresh, green husks that are insect-free. If the kernels are visible, make sure they are plump.
Here’s a short video about preparing sweet corn.
Sweet corn is most often eaten cooked. Peel or “shuck” the outer green leaves and remove the silks. If you see insect feeding damage on the tip end, simply cut off the end of the ear.
Sweet corn can be cooked anywhere from 30 seconds to 3 minutes, depending on how “done” you like it. Once cooked, it can be eaten directly off the cob or sliced off and used in recipes. To slice corn from the cob, use a very sharp knife (do not use a serrated knife). Hold the ear firmly at the tip and carefully shave off the corn kernels at their base, without cutting the cob. Each ear will produce about ¾ cup of corn.
Boil: Shuck corn. Boil a large pot of water with 1 tablespoon of salt and then add corn. Cook for 3-5 minutes.
Steam: Shuck outer husks and silks from corn. In a steamer, add 1 inch of water to the bottom and bring to a boil. Place corn in a basket above boiling water for 7-10 minutes.
Microwave – Leave corn in husks, place in the microwave, and cook them on high for 4-6 minutes. Let corn cool and then pull off husks and silk.
Grill: Heat grill to medium-hot, pull back the husks, but leave them attached. Remove the silks and brush corn with olive oil. Pull husks back over corn and wrap with aluminum foil. Turn corn occasionally while grilling for about 15 minutes. Let corn cool, then remove husks. Alternatively, shuck only the outer leaves of the ear and remove the silks, leaving a few layers of leaves around the ear. Soak the ears in water for a few minutes while heating the grill. Lay the ears directly on the hot grill and grill, covered, for about 20 minutes, turning every few minutes. Remove charred leaves.
Corn is best eaten the day it is picked. The sugars in corn begin to convert to starch very quickly so you should purchase only what you can eat in a few days. Store sweet corn in the refrigerator with the husks on or off — of course, shucked corn will fit in the fridge much more easily. Raw corn cut off the ears will last only a day or two in the refrigerator before turning sour. Cooked corn that is cut off the ears will last in the refrigerator about 4 to 5 days.
Corn is one of the best vegetables to freeze because the quality of home-frozen corn is superior to commercial products.