Grill corn on the cob until it has a bit of color. I grill corn by removing the shucks and as many of the silks as I can. I do not soak in water or oil the corn, I put it on the grill naked. Any remaining tiny silks will burn off.
After corn is grilled, allow it to cool until it can be handled and corn can be removed with a knife from the cob. Place in large mixing bowl.
Add 5 ounces of cotija cheese to the bowl, reserving 1 ounce for garnish.
Add all other ingredients and stir to combine.
Garnish with remaining cheese and lime slices if you'd like. Serve with tortilla chips or as a salad. Refrigerate until ready to serve.