The ultrafine cauliflower purée makes the soup seem as if it is cream based—it's that shockingly satiny. The initial taste of the cauliflower comes off as earthy, but within moments it is clear just how regal this vegetable truly is. Dehydrated red onion pieces and Bibb lettuce leaves provide sweet and sharp flavor notes and a textural counterpoint, while a whisper of balsamic vinegar pushes this humble combination of ingredients to scale great heights.