The round shape of most pies is primarily influenced by tradition and practicality. Here are a few reasons why pies are often made round rather than square:
Tradition: Round pies have been a part of culinary traditions for centuries. Historically, round pies were easier to make using the available tools and materials. Circular pie pans or dishes were commonly used, and the shape became the standard for pie-making.
Even baking: A round shape allows for more even heat distribution during the baking process. The heat reaches the center of the pie at the same rate as the edges, resulting in a more uniformly cooked filling and crust. Square or rectangular pies may have uneven heat distribution, leading to inconsistent baking.
Crust-to-filling ratio: Round pies have a higher crust-to-filling ratio compared to square pies. The crust is a popular aspect of pies, and the circular shape provides more surface area for the crust, allowing for a desirable balance between the crust and the filling.
Aesthetics: Many people find round pies visually appealing. The symmetrical shape of a round pie is often considered more pleasing to the eye and can enhance the overall presentation of the dish.
However, it's worth noting that square or rectangular pies do exist. For example, savory pies like meat pies or pot pies are sometimes made in square or rectangular pans. Additionally, individual-sized hand pies or tartlets may take on different shapes, including squares or triangles, for practicality and convenience. Ultimately, the choice of pie shape depends on personal preference, cultural traditions, and the intended purpose of the pie.