Chefs call this "fingering the banana".

Цитата от(из) bdmccaig:

You forgot the coolest part of a banana tear down. Before eating but after peeling, press your fingers, gently but firmly all around the top of the banana until the top begins to split into 3 parts lengthwise. You can then either stick your finger gently in the split and work it slowly down the length of the banana, or continue massaging the banana as you move down its length. Eventually you will be able to separate the banana into 3 long pieces. Now you can make a banana split or have 3 equal pieces to share with 2 friends. Sorry, no pics cause we ate the banana.