There is no city in India that takes its food as personally as Lucknow. In most places, a restaurant is a business. In Lucknow, it is an institution — a lineage, a reputation, a point of civic pride that has been defended through generations. Families have been going to the same shops since their grandparents’ time, and the shops have not let them down. Here are ten such places, each a small universe of flavor, memory and belonging.