I've had just one. It was close to a foot and a half across, rolled into a wide cylinder that could hold a wall calendar or two. Tucked inside was a fistful of potato masala. A bowl of spicy sambar and some coconut chutney came on the side.
At first I could only gape at the thing, pondering its size, its form, its possible aerodynamic characteristics.
It's chow, of course, you can eat it any way you like. And I did. It was delicious. But I'm wondering whether there's a customary way. Because often those customs make good sense.