Pav (from the Portuguese pao) is the bread roll of the Konkan coast — introduced by the Portuguese in the 16th century, adopted first in Goa, then in Bombay, and now the foundation of Mumbai street food: vada pav, pav bhaji, misal pav.
The Portuguese established themselves on the Konkan coast in the early 16th century — Goa from 1510, Daman and Diu from 1535, and settlements along the Malabar coast. They brought with them the pao — a soft wheat bread roll leavened with yeast. This was a genuine introduction: leavened wheat bread was not part of Indian cooking tradition before Portuguese contact.
The pav (the Indian adaptation of pao) spread from Portuguese Goa northward along the Konkan coast. In Bombay, which became the British commercial capital and received large migration waves from across India, the pav found its fullest expression — because Bombay's working-class population needed cheap, filling, portable food, and the pav provided exactly the right vehicle.

The pav in Mumbai was historically baked by the Catholic community from Goa and the Vasai region — the padeiro (baker) communities who migrated to Bombay with their bread-baking tradition intact. Mumbai's pav tradition is a diaspora contribution within India — Goan Catholic bakers maintaining a Portuguese-derived tradition in a city that made it the foundation of an entire street food culture. The dabawallahs, the mill workers, and the vada pav stalls all depend on bread produced by communities whose connection to bread-baking comes from a 500-year-old Portuguese introduction.