sour guava grove identification

I have 3-4 bottles of what looks like batch #2. Plain gold caps, punted bottoms. I previously said that I thought these were not sour, but now I'm going to change my mind and say they are sour. When inspecting them (thanks to this thread) I noticed one had leaked a little bit from under the cap, so I chilled that down and drank it asap. It was sour, and it was fantastic! I'm now treating the remaining bottles that I have as treasure. Thanks, ThoreauLikeAGirl, for putting this list together!