01 - Cook pasta according to package directions until al dente. Drain thoroughly and rinse under cold running water until completely cooled.
02 - If using fresh corn kernels, heat a skillet over medium-high heat and char the corn until lightly browned, about 5 minutes. Let cool completely.
03 - In a large mixing bowl, toss together cooled pasta, charred corn, red onion, red bell pepper, jalapeño, and fresh cilantro.
04 - Whisk mayonnaise, sour cream, lime juice, lime zest, chili powder, smoked paprika, cumin, hot sauce if using, salt, and pepper until smooth and well combined.
05 - Pour dressing over salad mixture and toss gently until all ingredients are evenly coated with the creamy mixture.
06 - Fold in most of the crumbled cotija or feta cheese, saving a small portion for garnish.
07 - Transfer salad to a serving bowl or platter. Sprinkle reserved cheese on top along with additional cilantro if desired.
08 - Refrigerate for at least 20 minutes to allow flavors to meld. Serve chilled for best taste and texture.