I have a banana wine going right now. I freeze brown bananas. I had 10 pounds in the freezer, sliced half with skins and half without to make wine. Contrary to other posts I did not boil them first. I pulled them out of the freezer put them in mesh bags and add 1 box of golden raisins in the same mesh bag. Yah I know it is a lot of raisins but we shall see if it was too many. I added kmeta, 12 hours later pectic enzyme as they were thawing and then 12 more hours later Lavlin 71B yeast. I added enough inverted sugar to bring the OG to 1.085. From primary to secondary there was 2.5 gallons after the first racking there was 2 gallons. While it was a little hot tasting at the 2nd racking, we could taste the banana and it was not over powering. In fact, it was not too bad. It is still in secondary. I added bentonite per package directions on the 3rd day of fermentation. At 1.020 it was fairly clear when it went to secondary and we did stir it well before racking. The third racking it was at .99 and very clear.
It is now clear now with about 1/4 inch of lees. I will most likely rack again next week and then age in the carboys for several months. We only use 1 gallon carboys due to weight lifting restrictions.
I am pleased because the bananas would have been tossed in the garbage. We love bananas and buy them 2 times a week and generally add a few more to the freezer every week. We slice them, half with skins and half without.
We already have several more bananas in Zip Lock bags in the freezer and will make more when we have another 10 pounds frozen. We don't eat them once they have mostly brown spots.
I do plan to post the full recipe soon, just have not had time.