How to Make It
Bring a large pot of water to a boil over high. Add asparagus; boil until crisp-tender, about 3 minutes. Drain; rinse under cool water. Pat dry.
Combine avocado, buttermilk, half of the basil, half of the chives, goat cheese, vinegar, white pepper, salt, and sugar in a blender. Process until smooth.
Arrange asparagus on a platter. Top with dressing, remaining basil, remaining chives, and, if desired, black pepper.