By using the proper combination of heavy cream, milk, whole eggs, and egg yolks, you can produce a custard that makes quiche worth eating once again. After testing numerous combinations of dairy and eggs for our best quiche recipe, we settled on a medium-rich custard with a smooth texture, fine taste, and a good set, combining two whole eggs with two yolks, 1 cup of milk, and 1 cup of heavy cream. We found that a baking temperature of 375 degrees was low enough to set the custard gently and…