Crypto-Jews! Yes, thank you! And I heard about that book, but never read it.

My mom and I are always on the lookout for Jews in weird places.

The Cochin Jews and the Bene Israel of Malabar…both in India for 2 millenia plus. I know exactly Cochin-Jewish recipe: beef, bell pepper, and mushrooms in coconut milk, simmered with mustard seeds and curry leaves.