Not many people know that the stem of the banana plant is edible, Malaysians call it 'umbut pisang'. We remove the soft inner section of the stem to use in salads or curries. The stems are soft, tender and soak up flavours really well. Usually only eaten during celebrations
I personally believe that this was how people used to consume wild banana plants before domestication
Some additional information in this blog (in Malay)
https://animhosnan.blogspot.com/2012/02/umbut-batang-pisang.html?m=1