Step 1: Prepare the Corn: If using fresh corn, grill, steam, or boil the corn until tender-crisp, then cut the kernels off the cob. If using frozen corn, thaw completely.
Step 2: Combine the Dressing Ingredients: In a large bowl, whisk together the mayonnaise, sour cream, red onion, bell pepper, white vinegar, sugar, salt, and pepper until smooth. Taste and adjust seasonings as needed. A touch more sugar will enhance sweetness; a splash more vinegar adds tang.
Step 3: Mix Corn and Dressing: Add the corn kernels to the bowl with the dressing. Stir gently to ensure all kernels are evenly coated.
Step 4: Chill: Cover the bowl and refrigerate for at least 30 minutes to allow the flavors to meld. This step enhances the overall taste of the salad.
Step 5: Add Fritos and Cilantro: Just before serving, gently stir in the lightly crushed Fritos and cilantro (if using). This prevents the Fritos from becoming soggy.
Step 6: Serve: Serve immediately and enjoy! Refrigerate any leftovers promptly to maintain freshness, though the Fritos will lose their crunch over time.
Tips & Substitutions: For a spicier kick, add a pinch of cayenne pepper to the dressing or use jalapeo pepper instead of bell pepper. Greek yogurt can be used in place of sour cream for a tangier, lighter option. Different varieties of corn chips can be used if Fritos are unavailable. Adjust sweetness and acidity to your preference.