This simple soup doesn’t need an onion, a carrot, or even celery. Just a bunch of asparagus, a garlic clove, and a few fresh herbs. Honestly, you can forgo the sour cream and even the chicken broth, adding water instead. Of course, the sour cream and broth add richness and silkiness to the soup, but in a pinch, no dairy and plain tap water (or as Jacques Pépin always called it in cooking classes; eau de sink) are just fine. And if you don’t have the time to get or have access to fresh herbs, add 1 teaspoon of each in dried form at the same time you add the asparagus to the pot. See, basic and easy breezy.