As the title states, this is a clever trick where you can hand an unopened banana to a friend or family member, and as they peel the layers off, much to their delight and surprise, they will find it to be already cut in perfect slices.

Method 1
Method 1 of 2:

Using a Needle

  1. 1
    Stealthily secure a banana that is ready to eat. You don't want one which is too green, or has too many dark spots. The idea is that your friend or family member will actually want to eat it.
  2. 2
    Find a small needle, which is at least as long as the diameter of the banana.
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  3. 3
    Locate one of the seams of the banana, and insert the needle at the starting point. When bananas are peeled, we usually pull them apart along seams. This point can be at the top or bottom of the banana.
  4. 4
    Push the needle carefully through the skin and into the banana. Push it far enough to reach to the other side but don't puncture through.
  5. 5
    Without rupturing the entry point of the hole, move the needle back and forth, creating a clean slice inside the banana.
  6. 6
    Once you are satisfied that the spot has been cut, carefully pull the needle out of the spot, move up (or down) the banana about 1/2" / 1.2 centimeter (0.5 in), along the seam, and reinsert the needle. Repeat steps 5 and 6.
  7. 7
    Continue this process until you are finished.
  8. 8
    Present the unpeeled banana to a friend. Watch their surprise as they peel it and as discover the banana is already sliced.
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Method 2
Method 2 of 2:

Using Thread

  1. 1
    Instead of using the needle to slice the banana, get some length of thread.
  2. 2
    Using the needle and thread as in sewing, enter the banana at one point, and go 1 to 2 centimeter (0.4 to 0.8 in) to one side, and exit the banana.
  3. 3
    Enter the existing exit point with your needle and thread, and continue as in step 2 until you've gone all the way around the banana.
  4. 4
    Exit the needle at your original entry hole.
  5. 5
    Pull both ends of the thread, and the thread will slice the banana very cleanly.
  6. 6
    Get creative: Using this method you can create interesting patterns. Try to make a spiral or triangle banana pieces.
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Community Q&A

  • Question
    Could you use dental floss instead of thread?
    Community Answer
    Community Answer
    Yes. Same process.
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Warnings

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About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 42 people, some anonymous, worked to edit and improve it over time. This article has been viewed 318,030 times.
15 votes - 84%
Co-authors: 42
Updated: December 2, 2022
Views: 318,030
Article SummaryX

To slice a banana before it's peeled, start by finding a small needle that's at least as long as the diameter of the banana. Then, insert the needle into one of the banana's seams and push it far enough in to reach the other side but not exit the skin. Next, move the needle back and forth without breaking the entry hole, which will slice the banana inside of the peel. Finally, repeat the process down the length of the banana to create more slices. To learn how to slice a banana before it's peeled using thread, scroll down!

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