How Long Do You Cook A Corn On The Cob
Corn on the cob cooks quickly, and the exact time depends on whether you boil, steam, or grill it. So, how long do you cook a corn on the cob? For most methods, it takes between 3 and 15 minutes. The type of corn you buy also matters a bit. Sweet corn is tender fast, while older or starchy ears need a little more time.
This guide gives you exact times for every common cooking method. You will also learn how to tell when the corn is done, plus a few simple tips for better flavor.
How Long Do You Cook A Corn On The Cob
The short answer: boiled corn takes 3 to 5 minutes, steamed corn takes 5 to 7 minutes, and grilled corn takes 10 to 15 minutes. Below are the details for each method.
Boiling Corn On The Cob
Boiling is the fastest and most common way to cook corn. Here is what you do:
- Fill a large pot with enough water to cover the corn.
- Bring the water to a rolling boil. Add a pinch of salt if you like.
- Drop in the shucked ears. Do not overcrowd the pot.
- Cook for 3 to 5 minutes. Small ears need 3 minutes. Large ears need 5.
- Remove the corn with tongs and serve right away.
Some people add a tablespoon of sugar to the water. It helps bring out the natural sweetness. Others add a splash of milk. Both tricks work fine, but they are not required.
Do not boil corn for 10 or 15 minutes. That is a common mistake. Long boiling makes the kernels tough and mushy. The sugar turns into starch and the flavor drops.
How To Boil Husked Corn
If you leave the husk on, add 2 to 3 minutes to the cook time. The husk protects the kernels and steams them a bit. Pull the husk and silk off before you eat.
Steaming Corn On The Cob
Steaming keeps more nutrients in the kernels than boiling. The corn also tastes a little sweeter. Use a steamer basket inside a pot with about an inch of water.
- Bring the water to a boil.
- Place shucked corn in the basket.
- Cover the pot and steam for 5 to 7 minutes.
- Check at 5 minutes. The corn is done when the kernels are bright yellow and tender.
Steamed corn holds its shape well. It works great for salads and salsas where you want firm kernels.
Grilling Corn On The Cob
Grilled corn has a smoky flavor that boiling cannot match. You can grill it with or without the husk.
Grilled In The Husk
- Soak the ears in water for 10 minutes. This stops the husk from burning.
- Heat the grill to medium high.
- Place the corn on the grate. Close the lid.
- Cook for 12 to 15 minutes. Turn the ears every 4 minutes.
- The corn is ready when the husk is charred on all sides.
Grilled Without The Husk
- Shuck the corn and brush it with oil.
- Heat the grill to medium high.
- Grill for 8 to 10 minutes. Turn every 2 to 3 minutes.
- Look for light brown spots on the kernels.
Grilled corn cooks faster without the husk, but it can dry out. Keep an eye on it and pull it off as soon as you see char marks.
Other Ways To Cook Corn On The Cob
You are not stuck with boiling, steaming, or grilling. Here are two more options.
Oven Roasted Corn
Preheat the oven to 400 degrees Fahrenheit. Leave the husks on and bake for 25 to 30 minutes. Turn the ears once halfway through. The husk traps steam and the kernels come out tender.
Microwave Corn
This is the fastest method of all. Leave the husk on and microwave on high for 3 to 4 minutes per ear. Let it cool for a minute before you peel it. The silk comes off much easier after microwaving.
How To Tell When Corn On The Cob Is Done
You do not need a timer to know when corn is ready. Use your senses.
- Color: The kernels turn bright yellow and look glossy.
- Texture: A fork or knife slides in with almost no resistance.
- Smell: Fresh corn gives off a sweet, grassy scent when done.
- Taste: Bite one kernel. It should be crisp and sweet, not chewy.
If the kernel tastes flat or starchy, you cooked it too long. If it tastes raw and hard, give it another minute or two.
Tips For Better Corn On The Cob
- Cook corn the same day you buy it. The sugar turns to starch fast.
- Do not add salt to the water until the corn is done. Salt can make the kernels tough.
- Do not overboil. Three to five minutes is plenty for fresh sweet corn.
- Add butter and salt right after cooking, while the corn is still hot.
- If you cook corn ahead of time, chill it in ice water to stop the cooking.
Common Mistakes To Avoid
Most people overcook corn. That is the number one problem. Another mistake is boiling corn for 20 minutes because a old recipe said so. Old recipes were written for starchy field corn, not the sweet corn you buy today.
Another slip up is leaving the pot uncovered. Covered pots heat faster and cook more even. Also, do not crowd the pot. Too many ears in one pot drops the water temperature and leads to uneven cooking.
Finally, skip the salt in the boiling water. Save it for the plate. Salt in the water draws moisture out of the kernels and makes them firm and chewy.
Quick Recap
- Boil: 3 to 5 minutes
- Steam: 5 to 7 minutes
- Grill in husk: 12 to 15 minutes
- Grill without husk: 8 to 10 minutes
- Oven: 25 to 30 minutes at 400 degrees Fahrenheit
- Microwave: 3 to 4 minutes per ear
Pick the method that fits your time and your kitchen. Boiling is the fastest on the stove. Grilling adds smoke and char. No matter which one you choose, fresh corn cooks in minutes, not hours. Pull it off the heat as soon as the kernels turn bright and tender. Serve it hot with butter, salt, and maybe a squeeze of lime.