In the above photo, some of those who attended the Aspen Center for Physics' June 6, 2013 public lecture on The Physics of Cooking by David Weitz made ice cream after the lecture by tossing salt and ice and a bag of milk, cream and sugar until it solidified.
Note that there are two separate listings below. First - Lectures at 6:30 in Paepcke Auditorium. Scroll down for Dialogues (more conversational) at 5:30 in Flug Auditorium.
Heinz Pagels Public Lectures
Thursdays - 6:30 pm
Paepcke Auditorium, Aspen Institute, 1000 North Third StreetClick the colored dates for more information on each lecture.
View a 13-minute Video about the Aspen Center for Physics
Thursdays - 5:30 pm
Flug Forum, Aspen Center for Physics, 700 West GillespieDialogues are an informal opportunity for the audience to interact with a physicist in a Q&A setting