steam or pressure cook 1 medium to large corn cob. you can steam 1 medium to large sweet corn cob in a steamer or a pressure cooker. if pressure cooking, then pressure cook for 2 to 3 whistles in 1.5 cups water. you can also use 1 cup of tinned corn kernels.
when the corn cob is still hot or warm, slice off the corn kernels from the cob. you should be able to handle the heat. if not, then wait till the corn cob becomes warm. be careful while slicing the kernels. you will need about 1 cup of corn kernels.
take the corn kernels in a mixing bowl.
add 2 to 3 teaspoons butter. the heat or warmth of the corn kernels will begin to melt the butter. instead of butter you can also use olive oil.
mix the melted butter very well with the corn kernels. alternatively, you can melt the butter and add to the corn.
mix very well. check the taste and add more chilli powder, lemon juice, chaat masala if required.
remove in a bowl and serve masala corn immediately.