A side note, since
raw egg can be a
health risk (not that much to worry about, but it never hurts to be
safe), I usually cook the egg
yolk. Take the yolk and
sugar and mix in the top half of a
double boiler (or, use a stainless steal bowl that will sit on top of a saucepan). Bring water to a
boil and put yolk mixture over. Once water is at a boil, turn heat to low and
cook for 10 minutes, stirring
constantly. After 10 minutes, remove from heat, and
whip for several minutes until slightly
cooled. Then mix in the
cheese, etc.
Also, I like to use whipped heavy cream instead of egg white, I think it makes it a tad bit richer and lighter, but that could just be me.