Begin by gathering all your ingredients. Peel and finely chop one garlic clove. Cut the avocado in half, remove the pit, and scoop the flesh into a blender or mixing bowl.

Combine the avocado flesh, sour cream, chopped garlic, and the zest and juice of one lime in the blender. Add kosher salt.

Blend on high for about 30 seconds until smooth and creamy. If using a whisk, whisk vigorously until fully incorporated.

If too thick, add milk a tablespoon at a time, blending after each until desired consistency is reached.

Transfer to an airtight container, cover tightly, and refrigerate for at least 30 minutes.

After refrigeration, stir lightly and serve with tacos, burritos, or veggie platters.