I have participated in 6-7 Cook-Offs now, and wanted to give some suggestions that I think will make it better.
Cook-Offs use ACM style ranking. But don't you think 20 minutes penalty is a bit too much for a 2.5 hour contest? It is 20 min for 5 hour, so won't it be better if it was 10 minutes here?
Another suggestion(mainly applies to people like me who need sleep lol) would be to shift Cook-Off to same time but on Saturday, since people have school/college/office on Monday.