unbeaten egg white
Egg white is nearly fat-free and cholesterol-free, consisting primarily of high-quality protein with all nine essential amino acids. It is also rich in riboflavin and selenium, making it a nutrient-dense, low-calorie protein source.
About
Egg white, also known as albumen, is the clear, viscous liquid that surrounds the yolk within an egg. It comprises approximately 90% water and 10% proteins (primarily ovalbumin, ovotransferrin, ovomucoid, and lysozyme), with trace amounts of glucose and minerals. When unbeaten, egg white remains in its raw, liquid state with a consistent, glossy appearance. The protein structure in unbeaten egg white is largely intact and undenatured, distinguishing it from whipped or cooked forms where proteins are reorganized through mechanical action or heat.
Egg whites are sourced from poultry eggs, most commonly from chickens, though duck, quail, and other bird eggs are also used in specialized culinary applications. The quality and composition of egg white can vary slightly based on the hen's diet, breed, and age.
Culinary Uses
Unbeaten egg white is employed across numerous culinary techniques where its natural protein properties are leveraged without modification. It serves as a clarifying agent in consommés and broths, where its coagulating proteins trap impurities and create a clear liquid. In pastry work, unbeaten egg white is essential for glazing (egg wash), providing a shiny finish to baked goods when brushed on before baking. It functions as a binder in forcemeats, terrines, and certain custards, and is used raw or barely set in dishes like sabayon and certain sauces. Additionally, unbeaten egg white is employed in molecular gastronomy for spherification and in traditional cocktails like the Sour family, where its protein creates a silky mouthfeel.