Place the corn onto the grill grates, cover and let cook for about 2-3 minutes, until the corn is cooked through and charred in some spots.
– Using a brush or a butter knife, spread the mayonnaise mixture onto each ear of grilled corn. – Sprinkle each ear with 2 tablespoons of Cotija cheese, 1 tablespoon of cilantro and a pinch of chili powder. Taste and season with salt if desired.