Peel back husks from corn, if necessary. Pro: leaving some of the husks attached can help with rotating corn during roasting and makes a nice presentation.
On a gas stove, place the corn directly on the open fire over medium-high heat and let roast for 30-50 seconds until charred. Then carefully rotate using tongs until all sides are charred. *see grill and oven methods in notes
After charring, brush the corn evenly with melted butter.
Place the Indian spice and salt on a small plate or in a small bowl and mix. Take your lemon half and use it to pick up spices out of the bowl or plate. Rub spice-coated lemon on the corn until coated to your liking.
Garnish with cilantro or green onion. Serve immediately and enjoy!