Question: In 1928, at San Francisco’s old Playland-at-the-Beach amusement park, George Whitney invented a treat by pressing vanilla ice cream between two oatmeal cookies and dipping the whole thing in dark chocolate. What is this classic San Francisco frozen confection called?

Answer: The IT’S-IT. Everyone declared the combination to be “IT,” giving the treat its name. It was sold only at Playland for more than four decades and remains a San Francisco classic.