An absolutely delectable quiche makes an awesome brunch meal. They are simple yet delicious & easy to make. You need to assemble the filling, whisk the eggs, pour them into the ovenproof dish and prepare a crust. Then comes the hardest part, which is to whisk the egg whites. The egg whites need to be thoroughly whipped. In case you don't whisk the egg whites, they would end up being a soupy mixture when you add the yolks. The stiff peaks are what the egg whites need to be, and this can be achieved by using a whisk or a hand mixer.