When I make a mistake, I point it out and make it a learning moment... whether it is making hollandaise or beurre blanc, I always say "Okay, this is how "NOT TO" make the sauce!" Usually I will get some laughter but then I go into what made the sauce break or why the heat was too hot, etc. What you need to do is show that you must understand how to fix the problem and not give up. I make that the learning outcome. How to fix the problem is what we are trying to teach the students as well.
~Louis
