(Three brothers suddenly craving for kulfi is kind of scary)
I am sorry, I don't know how.
I only used to know how to eat it. Every day when we were kids, there was a kulfi-pushcart-man coming outside our gate during summer vacation. We used to eat it everyday. Then one day we all three siblings fell really sick. Mother banned kulfi from streets for us since then, and since then I haven't found any good kulfi to eat. Readymade packaged kulfi from big brand ice cream makers tastes burnt and disgusting.
EDIT: My mother knows how to make it, though I have no recollection of ever eating her version, must've been years ago when I was really small. Here is her recipe:
Equal amounts of whipping cream, condensed milk and khoya. Blend them together. Taste test it for sugar - you can add some if you feel its not that sweet. Then add in finely chopped pistachios. Optional is to add cardamom powder and kevda (or rose water). Then freeze in molds.