Kasi Halwa is a Traditional Halwa from Tamil Nadu made with White Pumpkin. White Pumpkin is called Poosanikai in Tamil, Boodida Gumadikaya in Telugu. White Pumpkin is also known as Ash Gourd and Winter melon.
Coming to the halwa, I must have noticed this halwa being served in weddings and have always looked forward to eating it. At some point I must have even asked what it's called. The memory is so vague, on how I actually know or remember this halwa. However when I recently got exposed to this dish again, I was remembering all the occasions that I have tasted this. I say tasted as you only get to be served a teaspoon of this halwa. That was mostly more than enough as it used to be very sweet and nectar like. We keep accumulating information that you hardly remember where you learnt about certain dishes.