The Primary Role of Eggs: The Golden Egg Wash
For many home and professional bakers, the most common use of eggs in a meat pie is for an egg wash. This is a mixture, often with milk or water, brushed over raw pastry before baking.
Functions of an egg wash:
- Golden Appearance: Results in a rich, appetizing golden-brown color due to the Maillard reaction.
- Shiny Glaze: Provides a beautiful, glossy finish to the crust.
- Sealing and Binding: Helps seal pastry edges to keep the filling enclosed and can hold decorative elements in place.
The wash composition can be adjusted: more yolk for deeper color and glossier finish; egg white for a shinier, less colored result.
Eggs in the Pastry Dough: A Matter of Texture and Richness
While many classic pie crusts use only flour, fat, and water, some recipes incorporate eggs into the dough, particularly shortcrust pastry.
Why add eggs to the dough?
- Binding: Egg proteins help bind the dough, making it less crumbly and easier to handle.
- Moisture and Tenderness: Eggs add moisture, leading to a more tender crust.
- Enrichment: They add richness and flavor.
Omitting eggs is common for a flaky crust, while adding them creates a sturdier, richer option.
Eggs in the Filling: The Classic Raised Pork Pie
Eggs are not typically mixed into the ground meat filling of most modern meat pies, where flour and liquid are used for thickening. However, the traditional British raised pork and egg pie is an exception.
This variation includes a whole or halved hard-boiled egg within the meat and jelly filling, encased in a hot water crust. This provides a visual element when sliced. Unlike meatloaf or meatballs where eggs bind the filling, this is specific to certain traditional meat pies.
Nutritional Considerations
Adding eggs to a meat pie contributes protein, fats, and nutrients, but the impact depends on where they are used.
Egg wash versus dough egg
| Feature | Egg Wash | Egg in Dough |
|---|---|---|
| Nutritional Impact | Minimal protein/fat, negligible calories. | More substantial protein, fat, and calories, adds richness. |
| Culinary Purpose | Golden, glossy finish and seals pastry. | Adds richness, tenderness, and acts as a binder. |
| Flavor | Very little. | Richer flavor to pastry. |
| Texture | Affects exterior appearance/seal. | Contributes to a more tender, less flaky texture. |
For those on a nutrition diet, consider total calories. An egg wash adds little, but eggs in the dough increase caloric density. The filling is the main caloric factor.
Conclusion: The Versatile Egg in Meat Pie
Eggs are not standard in most meat fillings but are crucial for other aspects of meat pie. They are key in the egg wash for appearance and sealing. Some recipes use eggs in the dough for texture and flavor. Traditional variations like the raised pork and egg pie feature a hard-boiled egg in the filling. Thus, eggs play a functional or featured role in meat pies depending on the recipe, affecting appearance, texture, and nutrition.
For more on egg functions in cooking, consult resources like the American Egg Board.