Make the sauce. In small bowl, whisk together mayonnaise, sour cream, cilantro, chipotle pepper, garlic, lime zest and juice. Season with a pinch of kosher salt. Set aside.
Grill the corn. Heat the grill and when hot, grill the shucked corn, turning every 3 minutes until charred all over, about 10 minutes or so. Remove corn to a platter or plate.
Brush or spoon on the sauce all over to coat the corn, sprinkle with crumbled feta cheese and a dusting of chipotle pepper. Serve with lime wedges on the side.
Can cut off cob or use frozen or 2 cans corn to make salad. Add halved cherry tomatoes