Place the first 12 ingredients in a blender and blend until smooth. Refrigerate until serving. You can make this a day ahead. Taste and adjust salt, spice level, and acid to your liking.
Prep any garnishes you are using, finely dicing cucumber and shallot, slicing scallions, etc.
Mix sour cream and water in a small bowl (if making the swirl).
Spoon a large circle or “crescent” of thinned sour cream, then top with garnishes (see photos) cucumber, shallots, scallions, cilantro and microgreens, cooked shrimp, or edible flowers.
Serve immediately!
