Are egg yolks good for anything random around the house?

Question

When I make omlettes and such I only use the egg whites and it seems wasteful to me to just throw out the yolks (yes I could buy the egg whites in the carton but I do not want to) so I was wondering if anyone knows of anything good that I can do with egg yolks....

Answer 1

You can use egg yolks to colour your pastries on the outside! It gives this attractive, golden colour. Good enough, there wouldn't be any taste!

Answer 2

Make mayonnaise or other creamy sauces.

Of course if you are making egg white omelettes you are probably on a diet, so you may not want mayonnaise.