This is a really tasty soup. It NEEDS something though, and i can't put my finger on it. I used Greek yougurt which made it very rich and creamy. It's refreshing - probably even more satisfying if eaten cold on a hot summer day. I'm not sure what else to give it though. Maybe more salt, more cayenne. Maybe I'll try dill. I'd do it again whenever I figure out what is missing.
Wonderful soup. I made it twice this weekend to use up cucumbers, then put some in the freezer. I added a little more lemon juice and parsley than it called for - b/c that's what I like. I may end up adding a bit more broth when I warm it up next time. I enjoyed it luke-warm.