Egg
Eggs are one of the most versatile ingredients in any kitchen, beloved by home cooks for their flavor, nutrition, and near-magical cooking properties.
In a nutshell
A whole egg packs a powerhouse of complete protein, healthy fats, and essential vitamins into a tidy, affordable shell. The white provides lean protein while the yolk delivers fat, flavor, and most of the micronutrients. Together they perform dozens of culinary functions no other single ingredient can match.
Nutrition
≈ 19 Calories and 1.3g fat per tablespoon.
Eggs deliver all nine essential amino acids, making their protein one of the most complete and bioavailable sources available to us. The yolk is where most of the nutritional action happens: it’s rich in choline, a nutrient critical for brain health and fetal development that many Americans fall short on, plus fat-soluble vitamins A, D, E, and K. The modest saturated fat content sits alongside a larger share of monounsaturated fat. Eggs also supply lutein and zeaxanthin, two antioxidants linked to eye health, and a meaningful hit of B12, riboflavin, and selenium — all from roughly 70 calories per large egg. Nutrition per 100 g.
Culinary uses & pairings
In the skillet, eggs shine fried, scrambled, poached, or soft-boiled — each technique coaxes out a different texture from the same raw ingredient. A properly cooked scramble stays creamy and loose; a poached egg draped over toast or a grain bowl turns a simple dish into something restaurant-worthy. Learning to control heat is the real skill here: low and slow wins for scrambles, a gentle simmer for poaching, and a well-seasoned cast-iron or nonstick pan for a crispy-edged fried egg.
In baking and cooking, eggs act as binder, leavener, emulsifier, and thickener all at once. Whole eggs bind meatballs and veggie burgers; beaten whites lift soufflés and angel food cakes; yolks enrich custards, hollandaise, pasta dough, and mayonnaise. Washing a pie crust with beaten egg gives it that deep golden gloss straight from the oven. Few ingredients pull this much structural and flavor weight in so many different recipes.
Pairs well with
Substitutions
Buying & storage
Look for eggs with clean, uncracked shells and always check the sell-by date on the carton. Size matters in baking — most recipes are calibrated for large eggs (about 2 oz / 57g each), so stick with those unless a recipe specifies otherwise. The USDA grade (AA being the freshest with thick whites, A being the most common) is more relevant for poaching and frying than for baking. If you can, choose eggs from hens raised with outdoor access or on pasture — the yolks tend to be deeper orange and the flavor noticeably richer. Cage-free simply means no cages indoors; pasture-raised means meaningful outdoor time and generally a better egg.
Grades and Labels
- USDA Grade AA: The highest grade, with thick firm whites and tall yolks. Best for poaching and frying where appearance matters most.
- USDA Grade A: The most widely sold grade; slightly less firm whites than AA but ideal for all everyday cooking and baking.
- Cage-free: Hens are housed indoors without individual cages but may be densely packed. A modest welfare step up from conventional.
- Free-range: Hens have some outdoor access, though the space and duration vary widely. Flavor may be slightly more complex.
- Pasture-raised: Hens roam on real grass with significant outdoor space. These eggs typically have richer, more orange yolks and superior flavor.
- Omega-3 enriched: Hens are fed flaxseed or algae to boost omega-3 fatty acids in the yolk — a useful option if you’re watching your fatty acid balance.
Recipes using egg
1866 recipes across our recipe sites use egg. A few favorites:
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History & origin
Humans have been eating eggs since before recorded history, gathering them from wild birds long before the first chickens were domesticated from the red junglefowl in Southeast Asia around 6000 BCE. Domesticated chickens spread through Asia, the Middle East, and into Europe over the following millennia, and egg cookery shows up in the earliest known culinary texts. By the Roman era, eggs were a staple across the empire — scrambled, boiled, and folded into sauces — and medieval European cooks used them to bind, enrich, and clarify everything from pies to broths. The 20th century brought industrial egg production and a dramatic drop in price, making eggs one of the most democratic proteins on the planet. Decades of nutrition debate over dietary cholesterol complicated their reputation, but the scientific consensus has largely rehabilitated the whole egg as a nutrient-dense everyday food.
How it’s made
A hen’s reproductive cycle produces one egg roughly every 24 to 26 hours regardless of fertilization. Inside the hen, a yolk develops in the ovary and then travels through the oviduct, where it is gradually wrapped in layers of albumen (the white), membranes, and finally the calcium carbonate shell. The whole process takes about 24 to 26 hours once the yolk is released. Shell color — white or brown — is determined solely by the breed of hen and has no effect on nutrition or flavor. After laying, commercial eggs are washed, sanitized, graded by weight and interior quality (checked by a light called candling), and refrigerated. In the United States, washing removes the natural bloom or cuticle that seals the pores, which is why American eggs require refrigeration while unwashed eggs in many other countries can sit at room temperature.
Good to know
- The color of the yolk depends largely on the hen’s diet — more carotenoid-rich greens and insects produce a deeper orange yolk.
- An egg white is about 90% water, with the remaining 10% almost entirely protein — which is why it sets firm when heated.
- You can tell a raw egg from a hard-boiled one without cracking it: spin it on the counter — a hard-boiled egg spins smoothly while a raw egg wobbles from the shifting liquid inside.
- The chalaza — those white twisted cords you sometimes notice in a raw egg — is not an imperfection; it anchors the yolk in the center of the white and is a sign of freshness.
- Eggs are one of the few foods that naturally contain vitamin D, with most of it concentrated in the yolk.