This is the Palermo chickpea-fritter roll with a second fried thing added to it. The base is panelle: a batter of chickpea flour and water cooked to a paste, spread thin, cooled until it sets, cut into squares, and fried until the outside crisps and the inside stays soft. Packed hot into a soft sesame roll, that is already a complete street sandwich. The version here adds melanzane, aubergine sliced and fried until it collapses to something silky, layered in alongside the fritters so the bite carries two textures from the same pan: the snap of the panelle and the give of the aubergine.
The craft is frying discipline and the order of assembly. The panelle are cut thin so they shatter at the edge rather than reading as a slab, and they go into the roll the moment they leave the oil, before steam softens the crust. The aubergine is salted and fried separately until it loses its raw structure entirely and turns almost spreadable, so it binds the fritters together inside the bread instead of sliding out. The roll itself is plain and slightly sweet, chosen because its only job is to hold a hot, oily, just-cooked filling without competing with it; lemon and salt are worked in to order, sometimes a dusting of pepper, and nothing wet is added because the fryer has already done the work. None of it keeps. A roll that has waited has gone slack and the fritters have lost their edge.
The variations stay on the same Palermo street and the same vat: panelle alone with lemon, panelle with potato crocchè layered in for a build that is all crust, the version with a little caciocavallo shaved over the hot fritters. Each is a different load in the same soft roll, and each deserves its own article rather than being crowded in here.