Aloo Guwar subzi (Potato & Cluster beans subzi)

We do not get very tender cluster beans here in Dubai and hence I do not go out of the way to make dishes out of this beans though I love this veggie. This time in India when I got tender ones, I pounced on the idea of buying and making this lovely semi gravy subzi. Very easy as I am a pressure cooker fan when it comes to such gravies