The show was recorded remotely.
Samin Nosrat really wanted to choose "A" as the answer for the third Not My Job question. Peter talked her out of that answer and Samin changed her answer to "B", which was correct.
Bill Kurtis Bill-rolled the listeners by singing a hand-washing song based on Rick Astley's "Never Gonna Give You Up". At least on the radio version of the show, they followed it up with the original song as a musical bumper.