Remove husks and silk from corn. Using a stiff-bristled brush, like a dish brush, can help remove the silk. Just don't scrub so hard you damage the kernels.
Build charcoal fire. Once the charcoals are well lit and white all over, place husked corn on the grill grate, directly over the coals, and cook, turning occasionally, until tender and charred all over. About ten minutes.
Add all ingredients into a mixing bowl and stir to combine. Add salt to taste.
Let corn cool enough to handle. Cut kernels off the cobs into your mixing bowl and stir well to combine. Sprinkle the top with a little more cheese and cilantro before serving.