Cut corn cobs in half and trim the ends. With a large knife, quarter the cobs by cutting down the middle of each corn cob. You may want to put a cloth under your tablecloth so it doesn’t slip. Be sure to place your hands on top of the knife and tap, tap, tap to cut into slices.
In a large bowl, make your sauce by mixing the sour cream, mayonnaise, garlic, lime juice and zest, dried cilantro, garlic powder, smoked paprika, chili powder, salt, and pepper.
Add corn cobs to your sauce bowl and toss to coat evenly. You may want to add one at a time and toss in sauce with tongs.
Heat the grill to 400-450 degrees. Place the corn cobs on the grill, kernel side down. Cook for 6-7 minutes or until you have the perfect amount of char to your liking! Fun fact: At about 2 minutes of grilling, you may hear a “pop” or “crackle” when the corn ribs curl.
Remove from heat. Before serving, pour melted butter over corn cobs and toss with cotija cheese and chopped fresh cilantro.