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I have looked up how to make Banana juice because I wondered if it was possible. It turns out that it is.

I read that it is best to use a blender for this.

Wouldn't I just end up with a banana puree if I use a blender to try to juice it?

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    Perhaps if you freeze the bananas first then blend them it'll stop the bananas become a mush. You could also blend slightly then sieve, this would give a smoother texture after that I'd personally mix with another juice or something :). Other than that bananas don't really have a juice. – CandiedMango Sep 2 '15 at 5:06
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If you microwave bananas for a few minutes in a bowl covered with plastic wrap and then dump everything into fine mesh strainer to sit for about 15 minutes, you will get a bunch of juice out. Freezing the bananas before microwaving them works even better.

This technique was used in a (really good) banana bread recipe from Cooks Illustrated several years ago. Once the juice is extracted, it is reduced, allowing more real bananas in the bread without making it too wet.

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    I love that recipe and came here to say exactly what you said when I saw this question in the sidebar :) – Jolenealaska Jun 11 '17 at 9:07
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I've made banana juice a number of times. And I'm referring to a relatively clear liquid extracted from the bananas. It's a pretty straightforward process that produces a high yield. The water in bananas is chemically bound to the starch in bananas and this liquid can be released by breaking down the starch using an enzyme called amylase that is present in bananas. Here's how I do it:

(Yield 1 liter of juice)

  1. Take 2 kilograms of bananas, peel and puree them.
  2. Pour the puree into a vacuum bag and seal. Alternatively, you can put them in a VERY securely tied plastic bag with the air pressed out or you can put the puree into a canning jar.
  3. Next place this in a pot of water at around 150 Fahrenheit/65.5 Celcius and let sit for 5 hours. This allows the naturally occurring amylase in the banana to fully breakdown the starch in the banana and release the liquid.
  4. Strain the liquid through a nut milk bag (my preferred method), or you can use several layers of cheesecloth, but a nice nut milk bag makes this so much easier.
  5. Squeeze (and massage to get the highest yield) the juice through the bag. You should get about a liter (generally a bit more than that) of fresh, delicious banana juice!
  • Good use of enzymatic degradation. – user110084 Jun 11 '17 at 9:28
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The people of North West Tanzania and Southern Uganda have been making alcohol from banana juice for years. They blend ripe bananas with grass and mix with there feet or hands until the enzymes break down to get clear juice.

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hmm... I imagine that a method similar to getting liquid to make jellies could work for this. Freezing would break the cell walls and allow more liquid out, then you could blend it to a lovely mush and then put it into a jelly-bag or cheese-cloth and suspend it over a bowl in the fridge for a day or two and you should get some liquid out :)

  • You don't need to let it sit for days, and I think blending it makes it harder to get the liquid out of bananas, but freezing and thawing then straining works well. – NadjaCS Sep 5 '15 at 15:50
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You can make banana juice by using enzymatic breakdown of the starches. It is not a difficult process, and can be accomplished in the home kitchen, but would require some ingredients and techniques that you may not have or be familiar with. The details can be found here: https://www.chefsteps.com/activities/banana-juice--11

While this produces excellent results, you could speed the process greatly and achieve a higher yield if you have access to a food safe centrifuge.

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There is no such thing as banana juice. Banana flavor comes from an oil that does not mix well with water. Normally it is imbued in the fatty flesh of the banana.

You can buy banana acetate which has a banana-like flavor. I think this can be mixed with water to make juice. It does not taste exactly like banana, but is similar.

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    I find this untrue. Like all fruit, bananas have a high water content, and once this liquid is somehow separated from the solids, it's a juice. The method suggested by James creates a watery liquid with a very strong banana flavor, for example, I've done it myself. I don't know whether your data on solubility is wrong, or maybe the oil is dissolved in something else and mixed with the water, but you can certainly have a clear good-tasting (banana-tasting) liquid created from the fruit. – rumtscho Sep 4 '15 at 8:19

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