Vazhapoo Paruupu Usli is a very native dish from the South of India, I'm really not sure whether it originated in Kerala or Tamil Nadu. However, I can assure it, it is one of the most scrumptious vegetables you can eat.
Banana flower's insides i.e. the stamens by nature have some level of bitterness to them. So as you clean them, remember to soak them in water and squeeze a lemon on it.Left is a photo of the raw banana flower. You remove the stamens from the flower base.
This is a recipe where you steam some lentils mixed with coconut,
coriander seeds, red chillies and roast them along with the banana flower in a large wok.