In a medium bowl, whisk together mayonnaise, sour cream, milk, lime zest, lime juice, chopped jalapeno, granulated sugar, and black pepper until smooth.

Bring a large pot of salted water to a rolling boil. Add spiral pasta and cook according to package instructions until al dente, about 8-10 minutes. Drain and rinse under cold water.

In a large skillet over medium-high heat, brown ground beef, breaking it apart until cooked through, approximately 6-8 minutes. Drain excess fat, then stir in taco seasoning and salt and pepper to taste.

In a spacious mixing bowl, combine the cooled spiral pasta, ground beef, dressing, diced red onion, chopped red pepper, halved grape tomatoes, and chopped cilantro. Toss gently to coat.

Cover and refrigerate for 4-6 hours, or ideally overnight, to enhance flavor.

Before serving, fold in the shredded cheeses, crushed Doritos, and diced avocados. Adjust dressing consistency with a splash of milk if needed.

Transfer to a decorative platter and garnish with crushed Doritos and fresh cilantro before serving.