Here's a shocker, the answer involved concerns avocados.
This Q&A has obviously been very rewarding: Browning Avocados - What Helps?
The answers to that question other than my own caused me to want to do further experimentation. I particularly wanted to explore ascorbic acid (Vitamin C) and propanethiol S-oxide gas from diced onions. I did those experiments with the same kind of photographic record keeping as the experiments in the original answer.
I couldn't be more pleased with the results of the second bout of experimentation, because what I tried, worked.
So now I have a real answer to the question, "What Helps?" What has been in that slot has been so highly upvoted because it was a good experiment with rather shocking results, not because it really answered the question. That answer says quite well what doesn't work. (Being on the "Hot List" for quite a while didn't hurt)
So my inclination is to replace the older, highly upvoted answer with the new (IMO better) answer, and move the old answer to a new question, "Do lemon juice, lime juice, vinegar or Fruit Fresh help keep avocado green?"
Early in the new answer, I will link to the old one and point out that all edits are transparent.
Now, to do it that way is not going to give me a lot of rep. Most regulars here have already upvoted that slot. So the only way they can upvote the new answer is to actually go to the old one and upvote it. That's not going to happen in droves. But I really don't care, I care far more that I'm treating the results in the best possible way for them to be found by future users.
My biggest concern is that some users won't necessarily think that through, and will see something cheesy in replacing such a highly upvoted answer with an entirely different answer.
So I bring this here for your input. Is there a better way? If so, I'd love to hear it. If the community is supportive of my handling it this way, I have the benefit of having someplace to send people who might think I'm trying to pull something cheesy.
If you want to see of a draft of the new answer, you can find it (with a few edits) in chat, here: http://chat.stackexchange.com/transcript/message/19422570#19422570