The vindaloo you know is not the only vindaloo around. There is one for every ex-Portuguese precinct — whether in Macau or Latin America or India. In the Konkan itself, the Goan version is as different from the Mumbai one as the Christians of Goa are from the East Indians of Mumbai.
In fact, there isn’t one recipe for anything East Indian because it is a khichdi of many identities — the kolis or fishermen community, adivasis, farmers, Brahmins, among others. All of them pushed for a common identity to differentiate themselves from the Goan Christians.