01 - Prepare pasta according to package directions until al dente. Drain thoroughly and rinse under cold running water to stop cooking process. Set aside to cool completely.
02 - If using fresh corn, heat skillet over medium-high heat and char kernels until lightly browned, approximately 5 minutes. Allow to cool completely before proceeding.
03 - In a large mixing bowl, add cooled pasta, charred corn, diced red onion, bell pepper, jalapeño, and chopped cilantro. Toss gently to distribute evenly.
04 - Whisk together mayonnaise, sour cream, fresh lime juice, lime zest, chili powder, smoked paprika, ground cumin, and hot sauce if using. Season with salt and black pepper to taste. Continue whisking until completely smooth and emulsified.
05 - Pour prepared dressing over pasta and vegetable mixture. Toss thoroughly until all ingredients are evenly coated with creamy dressing.
06 - Gently fold in all but 2 tablespoons of crumbled cotija or feta cheese, taking care not to break down pasta pieces.
07 - Transfer salad to serving bowl or platter. Sprinkle reserved cheese over top along with additional fresh cilantro if desired.
08 - Refrigerate for minimum 20 minutes to allow flavors to meld. Serve cold for optimal taste and texture.