Over time, I've learned to keep them and use them...
If you've got egg yolks to use, for instance, you can leave them in the fridge covered for up to 3 days or in the freezer for up to 4 months. When freezing them, however, it's important to first whisk them with either 1/8 tsp salt or 1 1/2 tsp sugar or corn syrup for every 4 yolks. Once thawed, 1 tbsp of the egg yolk mixture is equivalent to 1 large fresh yolk (http://blog.getcracking.ca/)
So what can you make with egg yolks? Well, there's:
Another popular way of using egg yolks is making a custard (or creme anglaise). Per Wikipedia, a creme anglaise is "a light custard used as a dessert cream or sauce." It's a mixture of sugar, egg yolks and hot milk, and is most often flavoured with vanilla. The custard is made by whipping egg yolks and sugar together and then slowly adding hot milk infused with vanilla beans, while whisking. The sauce is then cooked over low heat and stirred constantly with a spoon until it is thick enough to coat the back of a spoon.
What about egg whites? Like egg yolks, they can be frozen, but here's what else you can do with them:
-use it in your hair for a natural conditioner
-give yourself an egg white facial
-make homemade eggnog
-have them for breakfast as an egg white omelet or scrambled
-make a soufflé
-make an angel cake
This past weekend, I used my egg whites to make a pavlova (meringue) to bring over to a friend's place for dinner. Last year, I had made what I called 'The Best Dessert Ever'. It was a meringue topped with vanilla whipped cream, berries, hazelnuts and drizzled with caramel. It was delicious! This time, I didn't have any berries (because they aren't in season yet) but I did have a jar of preserved pears in the fridge that I had been meaning to use. I made the meringue and topped it with whipped cream. I added the pears (diced) and then made a chocolate sauce using some more of the pears that I puréed. I heated the purée and then melted some chocolate into it. The sauce was drizzled onto the pavlova and finally, I added some toasted hazelnut pieces to finish it off. Yum!
Now that you know what to do with your leftover eggs I really hope that you learn to use them like I have. No more throwing them out into the trash!