Prep the cilantro: Rinse cilantro under cool water, then pat dry well. Roughly chop if using a small blender.
Zest and juice the lime: Zest the lime first, then squeeze out about 2 tablespoons of fresh lime juice.
Add ingredients to blender: Add the creamy base, cilantro, lime juice, lime zest, garlic, jalapeño, onion powder, salt, and pepper. Start with 1 tablespoon water.
Blend until smooth: Blend for 30–60 seconds, scraping down the sides if needed. Add more water slowly until the sauce reaches your desired texture.
Taste and adjust: Add more salt, lime, garlic, or jalapeño as needed. If too thick, thin with water; if too thin, add more creamy base.
Chill and serve: Chill for 15–30 minutes for the best flavor. Stir before serving.
