How to grill corn on the cob with chili lime butter

Australians spend their long summer evenings gathered around the barbie, and few things feel more like home than sweet corn turning smoky over hot coals. From backyard gatherings in Brisbane to weeknight dinners in Melbourne, grilled corn with a slather of flavoured butter has become a warm-weather ritual for families and food lovers alike.

The combination of smoky char, natural sweetness, and a bright kick of chili-lime works beautifully with Australian sweet corn, which tends to be plump, milky, and intensely sweet when picked at its peak. This recipe leans into those flavours with a compound butter that comes together in minutes and transforms a simple cob into something special enough for guests.

Over the years I've grilled corn every which way: in the oven, on a flat plate, wrapped in foil, and straight on the grill. The method below is the one I return to most often, and it pairs just as nicely with a cold glass of something as it does with a plate of grilled prawns or sliced steak. Whether you're hosting a proper barbie or just cooking for yourself on the patio, the steps are simple, forgiving, and well worth memorising.

Choosing the right corn for grilling

Australian sweet corn peaks from late November through March, with farmers' markets in Sydney, Adelaide, and Hobart offering some of the freshest picks of the year. Jubilee and Honey Select varieties are widely grown across the eastern seaboard, and both hold up beautifully over high heat thanks to their tender kernels and tight husks.

When selecting cobs, look for green husks that feel damp and fresh, with silks that are slightly sticky and golden-brown rather than dry and brittle. The cob itself should feel heavy for its size, and the kernels should be plump all the way to the tip. If you can peel back a small section of husk and pierce a kernel with your thumbnail, a milky liquid should bead out, which is a sign the corn is at peak sweetness.

Here's a quick comparison of corn types and how they perform on the grill:

Corn type	Best for	Flavour profile	Grilling notes
Australian Sweet Corn (Jubilee)	Straight-on grilling	Sweet, milky, classic	Holds kernels well; 10-12 min total
Honey Select (yellow)	Boiling or grilling	Very sweet, tender	Can scorch easily; rotate often
White sweet corn	Grilling with toppings	Milder, delicate	Less caramelisation; brush with butter early
Baby corn	Quick skewers	Subtle, crisp	2-4 min only; high heat
Polenta-style (milled corn)	Sides	Earthy, nutty	Not for direct grilling

Once home, store unwashed corn in the fridge with husks intact and use within two days for the best texture and sweetness. If you're buying from a market like the Brisbane Showgrounds or Adelaide Central Market, plan to cook it the same day for the freshest result.

Preparing your grill for sweet corn success

Australian weather can turn quickly in summer, so set up your grill in a spot sheltered from wind yet well vented. Whether you prefer a Weber charcoal kettle, a gas hooded barbecue, or a flat-plate electric grill, the goal is the same: medium-high direct heat, around 200°C, hot enough to char without burning.

For charcoal lovers, light the coals about 30-40 minutes ahead and wait until they're covered with a fine grey ash. Spread them evenly across the grate for direct grilling, or bank them to one side for a two-zone setup that gives you a cooler area in case of flare-ups. Gas grills should be preheated with the lid closed for 10-15 minutes, then the burners adjusted to medium-high.

Clean the grates thoroughly with a wire brush and then oil them well. I like to dip a folded piece of paper towel in vegetable oil and use tongs to rub it across the hot grates just before grilling. This prevents the corn from sticking and helps create those lovely dark streaks of char that make grilled corn so appealing.

Building the chili lime butter

The butter is the soul of this recipe, and it comes together in under five minutes. Soften 125g of unsalted butter on the counter for about 30 minutes, then beat it with the zest and juice of one fresh lime, one small finely chopped red chilli (deseeded if you prefer less heat), a teaspoon of smoked paprika, half a teaspoon of ground cumin, a small handful of finely chopped coriander, and a pinch of sea salt.

Taste and adjust, adding more lime juice for brightness, more chilli for warmth, or more salt to round out the spice. For a richer finish, stir in a tablespoon of honey or a small splash of olive oil. Once blended, spoon the butter onto a piece of plastic wrap, roll it into a log, and chill until firm. It will keep in the fridge for a week or in the freezer for two months, ready to slice into rounds whenever you fire up the grill.

If you'd like to riff on the flavour, swap the coriander for Thai basil or parsley, or trade the red chilli for chipotle in adobo for a smoky-sweet variation. A pinch of garlic or grated parmesan stirred through the butter also makes a lovely variation, especially alongside grilled meat or seafood.

Grilling the corn with confidence

Pull back the husks just enough to remove the silks, then fold the husks back into place and soak the whole cob in cold water for 15-20 minutes. This steams the kernels gently from the inside out and prevents the husks from burning too quickly over the flames.

Place the corn directly over the heat and grill for 10-12 minutes total, turning every couple of minutes so all sides char evenly. The husks will look singed and blackened in spots, which is exactly what you want. Once the husks are well charred and the kernels feel tender when pressed through the husk, pull the corn off the heat and let it rest for two or three minutes before peeling.

Pull back the husks (or strip them entirely and use the husks as a handle), then immediately slather the hot kernels with thick rounds of the chili lime butter. The heat of the corn will melt the butter slowly so it soaks into every kernel. Finish with a generous squeeze of fresh lime, a sprinkle of flaky salt, and a few extra coriander leaves if you like.

Serving corn the right way in Australia

Grilled corn shines brightest when served alongside other summer classics, and Australians have plenty to choose from. A simple platter of grilled corn, prawns, and lemon wedges makes a relaxed starter for a long Sunday lunch, especially when paired with a green salad of rocket, avocado, and shaved fennel dressed with olive oil and lemon.

For something heartier, serve the corn with grilled lamb cutlets, chicken skewers marinated in lemon and oregano, or thick-cut fish cooked on a flat plate. A glass of crisp Australian riesling from the Clare or Eden Valley, a chilled rosé from the Barossa, or a light sparkling wine from Tasmania all cut through the richness of the butter beautifully.

If you'd like to round out the meal with something sweet, the summer dessert recipes collection offers plenty of warm-weather options. A slice of mango and coconut cake, grilled peaches with mascarpone, or a simple pavlova with summer berries would all pair beautifully with grilled corn and complete a true Australian summer feast.

For those wanting to break from the summer grill later in the week, exploring curry spots across Japan offers a warm, savoury counterpoint, with rich sauces and gentle spice balancing the bright, smoky notes of corn.

Storing and reheating grilled corn

If you have leftover grilled corn, it keeps well in the fridge for up to three days. Strip the kernels from the cob with a sharp knife and store them in an airtight container, or wrap whole cobs tightly in foil and refrigerate. The kernels are wonderful stirred through salads, folded into omelettes, tossed with pasta, or used as a topping for grilled flatbread.

To reheat, the quickest option is a minute or two in a hot pan with a small pat of butter, or 30 seconds in the microwave if you're short on time. You can also slice the kernels off and toss them into a warm rice or quinoa bowl, or pile them onto a pizza with feta, herbs, and a drizzle of chilli oil. If the leftover butter has softened, reshape it and chill again before using, or melt it directly over warm vegetables or grilled fish for an instant flavour boost.

The same resting principles that apply to grilled meats, as discussed in why resting time matters, also help grilled corn hold onto its juices and smoky flavour, so don't skip that brief pause off the heat. This kind of attention to detail runs through many of the recipes at Rich and Sweet, where thoughtful techniques meet seasonal ingredients.