Being a north karnataka resident I wasn't aware of the craze for this bean until I actually got to stay in in the areas of south karnataka. I was lucky enough to get to know the recipe for one of the most liked curries, avrekaalu usli from Shilpa akka, who resides in Madikeri. Their might be many versions of it available on the internet, but the one I tried making is shilpa akka's family recipe, if I may call it so.
I really enjoyed cooking it, and relishing it was even more joyous. Highly recommended recipe, do try it.