This soup is my favorite kind of kitchen energy: cozy base, loud personality. You get the natural sweetness of squash, then ginger and garlic show up like they own the place, and a little chili brings the whole thing into focus. Finish it with lime and you get that zesty, zingy snap that keeps the bowl interesting all the way to the last spoon.
It is also extremely forgiving. Use butternut if you want classic and silky. Use kabocha if you want deeper, chestnut-like flavor. Use whatever winter squash you grabbed because it looked cute at the store. We are building flavor in layers, blending until plush, and seasoning like we mean it.