We bought one of these on the street in Jakarta's Chinatown, Glodok. They're lacy pancakes that are rolled up, presumably to make them easier to carry. I asked the guy what they were called but I forgot the name about three seconds later.
I would assume they harken back to the Dutch. They're cooked on this pretty cast-iron form.
Unfortunately, the pan is kind of the most exciting thing about them. They're crispy, thin, and somewhat sweet -- perfectly edible, but nothing I'll dream about when we're back in the States someday and I'm longing for Indonesian food.