master sushi chefs
Second question: I saw Nobi (of Sasabune) at Sushi Spot in Tarzana (Corbin and Ventura) one evening; he was having dinner. I think a lot of them have a teacher-student or a co-chef relationship, and just like us "regular peoples," they enjoy visiting their friends. But their time is limited because of the nature of their business, so, if they can eat and say "hello" at the same time, they frequent the sushi bars of their companions and compadres.
We have asked several of them this question, and a lot of them say they like hamburgers!