Whether we appreciate it or not, each of us has a personal brand, and everything we do affects it. It's more than your reputation, win/loss record, or what you're most known for. It's everything we do, say, post, share, write, and present. It's the cases we handle (and the ones we don't), it's how we help others (or don't), how we develop our expertise, and how we share it with others.
The idea of doing one thing right and sticking to it works in a variety of fields, but especially cooking. There are dozens of reasons for a restaurant to narrow its focus to one single dish. Aside from the lower cost of ingredients and predictability in kitchen workflow, practice makes perfect. Across the U.S., a growing number of restaurants are joining the herd to specialize in just one dish and deliver the best possible version of it.