How much protein is in one egg?

A single large egg contains 6.3 grams of protein, distributed almost evenly between the white (3.6g) and the yolk (2.7g). That split matters: whites give you protein without fat, while the yolk's 2.7 grams come packaged with every fat-soluble vitamin in the egg. For context, a large egg delivers roughly the same protein as one ounce of cooked chicken breast, in a smaller package and with more nutritional complexity. Source: USDA FoodData Central.

Is cooked egg protein absorbed better than raw?

Yes. Your body absorbs approximately 91% of the protein in cooked eggs, compared to only 51% in raw eggs. Heat denatures egg proteins, unfolding them into forms that digestive enzymes can break down more efficiently. This is one reason food scientists use cooked egg protein as a benchmark in human nutrition research. Eating raw eggs is not only less safe due to Salmonella risk, it is also nutritionally less efficient. Source: Journal of Nutrition, 1998.

How did ancient Egyptians hatch eggs artificially?

Ancient Egyptians developed large-scale artificial incubation at least as early as the 4th century BCE using mud-brick ovens, some capable of holding up to 4,500 eggs at a time. Skilled operators maintained temperatures by experience and feel, achieving hatch rates that impressed Greek and Roman observers. The technique predates modern mechanical incubators by over two millennia and represents one of the earliest examples of industrial-scale animal husbandry. Source: Encyclopedia Britannica.

How many pores does an eggshell have?

A single eggshell contains between 7,000 and 17,000 microscopic pores. These pores allow gas exchange: oxygen passes in, carbon dioxide and moisture pass out. This is how a developing chick breathes before hatching. The same porosity that sustains embryonic development also means eggs absorb odors from their storage environment, which is why storing them near strong-smelling foods affects their flavor. Source: Poultry Science Journal.

100+ Egg Facts That Will Crack You Up

Every egg holds a secret. Crack them open to discover fascinating facts about nature's most perfect food.

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An eggshell has between 7,000 and 17,000 tiny pores that allow air and moisture to pass through. That's how a developing chick breathes before hatching.

Source: Poultry Science Journal

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A hen's body takes about 24 to 26 hours to produce a single egg. The shell alone takes about 20 hours to form in the shell gland (uterus).

Source: University of Illinois Extension — Incubation and Embryology

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The green ring that sometimes forms around a hard-boiled egg yolk is iron sulfide (FeS). It's caused by a reaction between iron in the yolk and hydrogen sulfide from the white during overcooking.

Source: American Egg Board; On Food and Cooking, Harold McGee

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Eggs can absorb odors through their shells due to the thousands of pores. Store them away from strong-smelling foods like onions or fish.

Source: USDA Egg Storage Guidelines

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In the United States, eggs must be washed and sanitized before sale, which removes the cuticle (bloom). This is why American eggs require refrigeration — and European eggs don't.

Source: FDA Egg Safety Rule (21 CFR Part 118)

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Soufflés rise because air trapped in beaten egg whites expands when heated. The protein network holds the structure — until it cools and often collapses.

Source: On Food and Cooking, Harold McGee

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