Soon after blossoming time the banana flower changes color
The dark brownish/violet part of the remaining banana flower is called banana heart and can be used either as vegetable or even better as a delicious salad.
If you know how to make chicoree salad - then you also know how to turn a banana heart into a delicious salad. however the banana heart is slightly more bitter than chicoree salad, hence to remove some of this bitter substance, wash your cut banana heart in salt water and squeeze gently. this procedure will remove most of the excess bitter taste.