A quiche is composed of what type of custard baked in a precooked piecrust?

A quiche is primarily a savory custard dish. It consists of a mixture of eggs and milk or cream that is seasoned with various herbs, spices, and other flavorful ingredients, such as vegetables, meats, or seafood. The essence of a quiche lies in its savory profile, making it suitable for breakfast, brunch, or a light meal.

This distinction is crucial because quiche is typically not sweet; rather, it highlights savory flavors that complement the creamy texture of the custard. Although cheese may often be included in a quiche, it is not a defining characteristic of the dish itself, nor is it inherently classified as 'rich' without considering the inclusion of cream or other ingredients. Understanding the nature of a quiche as a savory dish helps to appreciate its role in culinary traditions, especially in French cuisine where it originated.