Step 1

In a blender or food processor, combine the jalapeños and garlic and pulse until finely chopped. Season liberally with salt then pour over the lime juice. Puree until as smooth as possible, scraping the bowl as needed, then let stand for 5 minutes.

Step 2

Add the cilantro and avocado. With the machine running, pour in the olive oil and 2 tablespoons cold water until the sauce is smooth and pourable. Season with more salt, if needed, then pour into a bowl to serve.