The Paper Dosa is the extreme thin form of the South Indian dosa: a fermented rice-and-lentil crepe spread so wide and so thin that it cooks to a brittle, paper-like sheet. As a carrier it sits at the opposite end from a soft flatbread. Where a thicker dosa folds and yields, the paper version shatters, and that crispness is the entire point. It is less a soft wrapper for a filling than a crisp shell whose texture and the savor of its browned surface are the dish.
The build is about the batter and the spread. Ground soaked rice and lentils are fermented until the batter is light and faintly sour, then a ladleful is poured onto a very hot griddle and spread outward in a spiral with the back of the ladle, thinner and wider than for any other dosa, often well past the edge of an ordinary plate. It cooks fast, the underside crisping and browning while the top sets, and it comes off griddle without flipping, then is rolled or folded into a long cone or cylinder. Good execution shows in an even, lacy thinness with no thick gummy patches, a uniform golden crisp across the whole sheet, and a clean roll that holds its shape and stays crackly to the table. Sloppy versions show up as a pale underdone center, a sheet so torn it cannot be lifted whole, or a dosa that softens and goes leathery within a minute of plating.
Variations are mostly about what goes with or in it. Plain, it is served with chutney and sambar for dipping, the crisp sheet broken off in pieces. Spread with spiced potato it becomes the stuffed masala form; brushed with ghee and chili powder it shifts savory and hot. The base fermented batter and the wider dosa family it comes from deserve its own article rather than being crowded in here, as does the potato-stuffed masala version. What stays fixed in the paper form is the engineering of thinness: a fermented batter spread to the limit so the result is all crackle and toasted edge rather than fold and chew.