Some people say it is in fact Brahmakamal [ब्रह्मा कमल]while some others give that credit to another plant scientifically known as Saussurea obvallata
This site has provided me some new information which I did not know. First, this plant produces an eatable fruit with a sweet fleshy core with black seeds. It is abundantly cultivated in the world. The flower and the fruit are edible and has medicinal properties. But to make the plant fruit, some techniques are needed. How to cultivate this plant for possible yield of fruits is described here with much illustration.