I have a question about the recipe "My version of Norway's World's Best Cake" from Regine. What does this direction mean? "Another secret behind the lightness of this cake is to be patient and methodical; fold by turning the bowl clockwise to 15 minutes each after each fold. It may take 30+ turns." Does it mean that I must fold for fifteen minutes times 30+ turns? I think that it must mean fold and turn 30+ times which will take a total of fifteen minutes.