Corn
Also called maize
Corn offers a crunch and natural sweetness, fresh or processed.
Corn, or maize, was domesticated in Central America thousands of years ago and is now one of the world's biggest crops. Sweet corn, the kind we eat off the cob, is bred to stay juicy and sugary, with a buttery, milky sweetness and a gentle earthy finish.
Cooks love it for its pop and sweetness. Grill it for smoky, caramelised kernels, slather it in lime and mayo for elote, fold it into salsas and chowders, or blitz it into a silky soup.
Flavor profile
Aroma: sweet, buttery
Good to know
Origin: Central America
Forms: fresh, canned, frozen
Season: Fresh sweet corn peaks in mid to late summer, roughly July to September in the Northern Hemisphere; frozen and canned corn are available year-round.
Nutrition: A starchy vegetable that brings carbohydrates and some fibre to a meal.
Storage: Fresh corn is best eaten the day you buy it. If you must wait, keep the cobs in their husks in the fridge and use within 1–2 days for the best sweetness. Dried-out, dented or mouldy kernels mean it is past its best. To freeze, blanch cobs for 4 minutes, cool in ice water, then cut the kernels off and freeze flat in bags for up to 12 months. Canned corn keeps for years unopened; refrigerate leftovers in a sealed container and use within 3–4 days.
How to use corn
Sweetest Corn Ever
Grilling caramelizes sugars, boosting sweetness.
Crunch Controller
Post-boil, an ice water bath stabilizes cell walls, locking in crunch.
The science of corn
- Sweet corn's sugar starts turning into starch as soon as it is picked, because the kernels are still alive. That is why just-picked corn tastes sweeter than cobs that have sat around, and why chilling helps slow the change.
- Grilling or charring corn triggers caramelisation and the Maillard reaction on the kernel surfaces, creating toasty, nutty flavours that balance the sweetness.
- Corn's starch gelatinises when heated in liquid, which is why corn chowders and creamed corn thicken on their own once the kernels are cut and their milky juice is released.
- Much of cooked sweet corn's signature aroma comes from volatile sulphur compounds such as dimethyl sulphide, released as the kernels heat. Short cooking keeps that corny smell in balance with the sweetness.
How to choose corn
Look for bright green, tightly wrapped husks that feel slightly damp and silks that are golden and a bit sticky, not black or dry. Squeeze gently through the husk: the cob should feel plump and full all the way to the tip. Avoid peeling back husks in the shop, as it dries the kernels.
Substitutes for corn
| Swap | Amount | What changes |
|---|---|---|
| Frozen corn kernels | about 1 cup per cob | Frozen quickly after picking, so often sweeter than old fresh corn; ideal for salsas and soups. |
| Canned corn | about 1 cup per cob | Softer and saltier; drain and dry well before searing. |
| Peas | 1:1 | Similar sweet pop in salads, pasta and fried rice, with a greener flavour. |
| Edamame | 1:1 | Firmer and nuttier; adds colour and bite to salads and grain bowls. |
What goes with corn
- Bacon. Bacon's fat and smoky notes pair perfectly with corn's sweetness.
- Lime. Lime's acid brightens corn's sweetness, as in grilled street corn.
- Jalapeño. Jalapeno's heat cuts corn's sweetness.
- Black Bean. Sweet corn and black beans are a classic, as in salsa and chili.
- Cilantro. Cilantro adds a fresh contrast to corn's sweetness.
- Basil. Sweet corn kernels and fresh basil pair in summer salads.
- Mayonnaise. Mayonnaise's creamy fat coats sweet corn, as in elote.
- Poblano. Poblano's mild, smoky heat balances corn's sweetness.
- Shrimp. Corn's sweetness matches shrimp's, and both are quick-cooking.
- Tortilla. Corn kernels add sweetness and echo the corn flavor in tortillas.
Mistakes to avoid
- Overcooking dries out corn, leading to tough texture.
- Premature husk removal speeds up moisture loss.
Ideas for tonight
- Grill with butter and herbs on the cob.
- Toss kernels into salads for crunch.
- Blend into a smooth corn soup.
Corn: questions
How long should you boil corn on the cob?
About 3–5 minutes in boiling water is plenty for fresh sweet corn. You only need to heat it through and soften the kernels; longer makes them tough and starchy.
Should you salt the water when boiling corn?
Lightly salting is fine, but very salty water can toughen the skins slightly. Many cooks prefer to salt the corn after cooking, along with butter.
Can you freeze corn on the cob?
Yes. Blanch whole cobs for 4 minutes, cool them in ice water, dry and freeze, or cut off the kernels for easier storage. Blanching stops enzymes that would turn it starchy and dull.
Why does fresh corn taste sweeter?
Picked corn keeps converting its sugar into starch. The fresher the cob, the more sugar is left, which is why farm-stand corn often tastes noticeably sweeter.
How do you grill corn on the cob?
Husk it, brush with oil and grill over medium-high heat for 10–12 minutes, turning, until charred in spots. You can also grill it in the husk for a steamier, less smoky result.
Is corn a vegetable or a grain?
Both, depending on how it is harvested. Sweet corn eaten fresh is treated as a vegetable, while dried corn used for flour, polenta and popcorn is a grain.
What does corn taste like?
Corn offers a crunch and natural sweetness, fresh or processed. Its strongest notes are sweet, with an aroma that is sweet, buttery.
What goes well with corn?
Corn pairs best with bacon, lime, jalapeño, black bean, cilantro. Bacon's fat and smoky notes pair perfectly with corn's sweetness.
How do you use corn in cooking?
Sweetest Corn Ever: grilling caramelizes sugars, boosting sweetness.
How should you store corn?
Refrigerate fresh corn with husks on to preserve moisture, or freeze kernels for longer storage.
What is the most common mistake with corn?
Overcooking dries out corn, leading to tough texture.
Lime
Bacon
Jalapeño
Poblano
Peas
Butter