I meant to say that I am asking about Dolichos lablab (Lablab purpureus)- just in case someone knows something else as hyacinth bean.

Tender pods are cut into half an inch size pcs., sauted and cookd till become soft like any other cooked beans.
You can shell the matured seeds and use for cooking as well.

Thanks much!

Yes they are very commonly eaten in southern India. The mature seeds taste somewhat like fava beans when cooked.