In a food processor (or a small-capacity blender), add the avocado flesh, sour cream, jalapeño, garlic, 4 tablespoons (60 mL) lime juice, cumin, cilantro, several cracks of pepper, and ¾ teaspoon kosher salt (see Note 4).
Blend until smooth and creamy, scraping down the sides. Taste, adding more lime juice or salt to taste.
Store leftovers in a jar or container with an avocado pit on top (this slows down browning). Refrigerate for up to 5 days.
