At its core, the ingredients are simple: pie crust, eggs, milk or cream, and your favorite fillings. The key to getting your quiche just right is the custard. The smooth-baked mixture at the heart of any quiche. The basis of this recipe is from www.cookinglight.com. The Custard For your custard to set properly in the oven, use this easy ratio: 1 part dairy to 2 parts eggs. Classic custards use…