If using canned corn, rinse and drain well. Add to a microwave-safe bowl with the butter. Cook on high for between one and a half to two minutes, stirring every thirty seconds until the butter is melted and the corn is hot.
Mix the sweetcorn and butter well.
Finely chop the cilantro and add. Add all the other ingredients (chat masala, cayenne, black pepper, black salt, lemon juice) and mix well.
Adjust seasoning to taste and serve in small bowls or paper cups with spoons. About half a cup is one serving.