The saw the recipe again in that book with very detailed ingredients and a nice picture too, under the title Urulaikizhangu Sagu, so I had to try it. Its a bummer that khus khus (poppy seeds) are not available in Singapore (something to do with how you test positive for drugs if you have eaten this!). I hear its even banned so trying to ship it in from India may not be such a good idea either.
So my version does not have khus khus in it, sadly. But if you have it handy, please add it in. I am sure the taste will differ considerably!