I noticed a few weeks ago there was short supply of bananas in the grocery stores, and when I went to our local market they only had very green bananas. I decided to get them and wait. After a couple of of days I saw no yellow and remembered something about putting them in a paper bag. I checked and did that but now after 4 days I only see minimal yellow and I can't peel them.

Anyone tried this before and can tell me how many days it takes, if ever?