01 - In a medium bowl, combine the sour cream and mayonnaise until smooth.
02 - Add the minced jalapeño, garlic, and chopped cilantro. Stir until evenly mixed.
03 - Incorporate the lime zest and lime juice, then season with salt and pepper. Mix thoroughly.
04 - Taste and adjust seasoning as desired. For increased heat, add additional minced jalapeño.
05 - Cover and refrigerate for at least 30 minutes to allow flavors to meld. This step is optional but recommended for optimal taste.
06 - Serve chilled or at room temperature, drizzled over grilled fish or seafood.