Lawyer Tim Zagat and his lawyer wife, Nina, have made a pretty good living publishing their eponymous surveys of the best restaurants in major cities across the country and around the world. The National Law Journal asked Mr. Zagat to turn his knowledge of eateries to the task of rainmaking and to come up with some rules for picking a good restaurant at which to woo a potential or existing client, along with a list of such places he thinks fit the bill.

National Law Journal Editor-in-Chief Patrick Oster interviewed Mr. Zagat over a modest but tasty deli sandwich lunch at Mr. Zagat’s Manhattan office. Following is an edited transcript of their conversation.