Before You Start
Picture a cart at dusk: a steamer full of corn cobs on one side, a flat griddle on the other, and a vendor scooping warm kernels into a paper cup with butter, spice and a squeeze of lemon. That is masala corn, and you can find it at evening markets, beach promenades and railway platforms across the country. It costs very little to make, which is one reason it is everywhere. People eat it with a small wooden spoon, often while walking.
There are two broad ways to make it. In one, the corn is boiled or steamed and then tossed with butter and spices off the heat. In the other, the kernels go onto a hot griddle with the butter and spices and cook together, so a few pick up a faint char. This recipe takes the second route, because it gives more flavour, and it points out the boiled option if you prefer something lighter.
Where This Dish Comes From
Masala corn does not trace back to one place the way many chaat dishes do. It rests on corn varieties from the Americas, which spread widely across India only from the middle of the twentieth century, well after pani puri and bhel puri had settled into their regional forms. When corn turned cheap and easy to find, vendors adopted it as an all-purpose cart snack, and now almost the same cup is sold in Mumbai, Delhi, Bangalore and Kolkata. Differences are slight. The north goes heavier on butter and chilli, parts of the south and west lean on lemon and sometimes grated coconut, and along the coast you will meet a bare salt-and-chilli cup that people often eat on the beach. Much like roasted peanuts and cut fruit, it is one of the few street snacks that crosses every regional chaat tradition while belonging to none of them.
Step by Step
-
Prep
Boil the corn until just tender
If you are starting from fresh cobs, simmer them whole in salted water for 6 to 8 minutes, until the kernels are tender yet still springy, and let them cool before cutting the kernels off the cob. Frozen kernels are quicker, needing just 4 to 5 minutes of boiling or steaming. Drain them very well. Water left on the kernels will make them steam in the skillet, and you want them to brown.
-
Cook
Brown the kernels in butter
Melt the butter in a wide skillet or on a griddle over medium-high heat until it foams. Spread the drained corn out in one layer and leave it alone for a full minute before you stir. That pause gives some kernels time to catch a little golden colour instead of simply sitting in melted butter. Keep cooking, stirring now and then, for 4 to 5 minutes in all.
-
Cook
Sprinkle in the spices
Lower the heat slightly, then scatter in the chilli powder, chaat masala, roasted cumin, black pepper and salt. Toss for 30 to 45 seconds, long enough for the spices to coat each kernel and toast lightly in the butter, but not so long that they clump together or burn.
-
Serve
Finish off the heat and serve while hot
Remove the pan from the heat and mix in the fresh green chilli if you are using it, then the lemon juice and the coriander. Taste, and adjust the salt, chilli and lemon until sour, salty and spicy all come through together. Spoon the corn into cups immediately. Once it cools and the butter sets, masala corn loses most of its charm.
Swaps That Work
Frozen corn works every bit as well as fresh, and it is what most home cooks reach for when corn is out of season. There is no need to thaw it all the way before boiling; just allow a minute or two extra. Use oil in place of butter for a dairy-free version, although butter gives the dish its richness and is worth using when you can. A spoonful of freshly grated coconut stirred in at the end is a common coastal touch in parts of Maharashtra and Karnataka. If you want a deeper, less sharp sourness, a little tamarind pulp can take the place of the lemon juice.
Turning the Heat Up or Down
Because the spices go in after the corn has cooked, this dish is easy to push in either direction. For a gentler cup, cut the red chilli powder to a pinch, skip the fresh green chilli, and let the chaat masala and lemon provide the flavour. For a hotter one, use a stronger chilli powder and add chopped green chilli, or finish with a few drops of vinegar-based chilli sauce, as some vendors in Mumbai do. Black pepper gives a sharper kind of heat than chilli powder, and it is worth keeping even in the mild version for the depth it adds.
Where Cooks Often Slip
The first mistake is skipping a thorough drain after boiling. Wet kernels steam in the pan and never pick up colour. Second, adding the chaat masala and lemon juice while the corn is still cooking over heat dulls both, so they belong at the very end, away from the burner. Third is going easy on the salt. Corn is naturally sweet, and it needs a firm hand with salt and chaat masala before it reads as a savoury snack instead of buttered sweet corn. Finally, if the corn waits too long before serving, the butter congeals and the kernels turn cold and slightly rubbery, so cook it just before you plan to eat.
Keeping and Warming Up Leftovers
To keep it: Leftover masala corn will keep in a sealed container in the refrigerator for up to 2 days, though it tastes noticeably better fresh because the butter sets and the kernels firm up as they chill. This is not much of a make-ahead dish, since the hot-butter finish and the fresh lemon and coriander fade quickly. If you do want to get ahead, boil and drain the kernels up to a day early and refrigerate them, then do the butter and spice stage fresh when it is time to eat.
To warm it up: Leftovers do best in a dry or lightly buttered skillet over medium heat. Stir often for 2 to 3 minutes until the corn is hot all the way through; a few kernels will crisp up again as a bonus. The microwave is an option when you are rushed, but it leaves the corn a bit soggy rather than browned. After reheating, add a fresh squeeze of lemon and a pinch of chaat masala, because both lose their brightness in the refrigerator.
Kitchen Safety Note
This is a plain vegetarian dish and carries no special food-safety risk beyond ordinary kitchen hygiene. Make sure the corn is cooked through before you serve it. Cool and refrigerate leftovers within two hours, instead of leaving buttered corn out at room temperature for long, because warm cooked kernels and butter are a poor combination to leave sitting in hot weather. If you start from fresh cobs, rinse them well before boiling to wash away any field debris from the husk and silk.