Preheat oven to 425 F
The first step is to shuck the corn and wrap it in a single layer of heavy-duty foil or parchment paper to fully enclose it after brushing it with oil and sprinkling it with a pinch of salt. Place in the oven until tender.
Let's prepare the creamy sauce while the corn is roasting, grilled, or boiling.
In a mixing bowl, add sour cream, mayo, fresh garlic, cayenne pepper for a little spicy kick, lime juice, a pinch of tajin or chili pepper (optional), and a generous amount of Cotija cheese. Then, add fresh cilantro mix, and set aside
Remove the corn from the oven, and I like to transfer the corn to a serving tray but you can partially unwrap the corn to cool for a few minutes before applying the sauce.
Lastly, use a basting brush to generously brush the sauce over the elotes or corn, then sprinkle with cotija cheese. Garnish with chili powder or tajin and cilantro.