This was inspired by a cucumber cilantro soup
Blend all ingredients in a blender until smooth.
For the garnish, stir all ingredients together in a small, shallow bowl/cup and let marinate before hand for 20 minutes or so, at least. Drain the vinegar mixture from the cucs and mushrooms, and use the cucumber and mushrooms to garnish your soup :)
This whole thing would also come together beautifully with crushed red pepper