01 - Combine mayonnaise and sour cream in a medium bowl, whisking until completely smooth and homogeneous.
02 - Add minced jalapeños, jalapeño brine, garlic, cumin, onion powder, salt, and black pepper to the base mixture, stirring thoroughly to distribute spices evenly.
03 - Pour in fresh lime juice and fold in chopped cilantro, mixing well to integrate all components.
04 - Cover the bowl and refrigerate for minimum 1 hour, allowing flavors to meld and develop depth.
05 - Remove from refrigerator, stir well before serving, and present chilled as a dip, drizzle, or sauce.