Bergman didn’t dare to call his idol Sjöström himself about the movie thou, so the head of Swedish movie industry made the call. Sjöström was initially reluctant, due to his high age, but agreed to meet with Bergman to discuss the movie. So Bergman went to his apartment and talked about it, Sjöström said he’ll think about it. The next morning Sjöström called and agreed on the part on one condition. As long as Bergman promised Sjöström that he’d be able to come home and have his whiskey grog at 5 pm every day, he would do the movie.