For a "green bean" that really grabs you by the throat and shakes you,try some "petai'(Parkia speciosa)either raw,blanched in hot boiling water,or
grilled/toasted over hot charcoal with or without the skin.


Wikipedia says they can be called bitter beans or stink beans but I've only seen them called petai in English.

"Petai" has a stong pungent,slightly bitter and even hot spicy aftertaste even without flavoring and sauces/dips.
It's an acquired taste and some people,myself included, are addicted to them.
They are considered to be effective anti oxidants,antiseptic and also used to lower blood sugar and hypertension in local traditional herbal medicine.Often consumed in local salads/"ulams".
"Petai" is the Malay/Bahasa Indonesian name for the bean.
The wild petai tree growing in the forest are large, very tall trees with spreading branches and tiny leaflets and are usually gathered by the "orang asli" tribal people for their own consumption and sale in the markets.
They have also been cultivated commercially in small farms and plantations as shade trees for cocoa bean bushes.