I made this last evening and while I followed the recipe exactly, and it was pretty tasty, I think it could use some improvement. This was the first time I actually had to separate egg yolks and whites and I remember that one time Patrick told me that having even the smallest amount of yolk in the white will prevent it from stiffening, and that happened to me. That’s why the roulade broke in several spots. In the future I’ll probably use 5 scallions instead of the required 8, and a little less cream cheese in the filling. The filling overpowered the sweet potato, which is always a bad thing.