The egg frankie is the Mumbai egg roll: a chapati with egg cooked onto it, rolled up with onion and chutney into a tight handheld cylinder. The defining feature is the bread, a thin, soft chapati rather than the flakier paratha used in eastern egg rolls, which makes this version lighter and more pliable in the hand. The angle is the bond between egg and chapati, because the frankie is built around an egg layer cooked directly into the flatbread, not an omelette wrapped after the fact.
The build is short and ordered. A chapati is warmed on the griddle, beaten egg is poured over it, and the bread is pressed flat onto the hot surface so the egg sets into one face as a single bonded layer. Once the egg is just firm the round comes off, sliced onion and a stripe of chutney go down the middle, and the chapati is rolled into a snug tube, typically wrapped in paper for street eating. Good execution shows an egg layer evenly set and fused to a chapati that is still soft and warm, onion adding raw crunch, and chutney run the full length so no bite is unseasoned. Sloppy execution means a chapati that has dried stiff and cracks when rolled, egg poured on cool bread so it lifts away in a loose sheet, an egg layer cooked grey and rubbery, or chutney clumped at one end leaving the rest flat.
The egg frankie shifts by seasoning and by what else joins the egg. Stalls vary the chutney from a sharp green herb paste to a tangy tamarind one, add a dusting of chaat masala or frankie masala, or fold a second egg in for a heavier roll. Scrambled spiced potato, paneer, or shredded chicken loaded alongside the egg turns it into a different frankie entirely, each of which deserves its own article rather than being crowded in here. The constant in the egg frankie is the egg welded to a soft chapati and rolled tight, and no masala or chutney saves a roll whose bread cracked or whose egg never bonded.