Everything You Need to Know About Cooking Eggs

The Most Versatile Ingredient in Your Kitchen

Eggs are remarkable. No other single ingredient can be boiled, scrambled, poached, fried, baked, whipped into meringue, emulsified into mayonnaise, used to thicken custard, bind a meatball, glaze pastry, clarify stock, or leaven a souffle. They are cheap, nutritious, and available everywhere. And yet, most people cook them on autopilot, settling for rubbery scrambled eggs, overcooked boiled eggs with grey-green yolks, and poached eggs that disintegrate into wispy threads in the water.

Cooking a perfect egg is not difficult, but it does require attention to time and temperature. Eggs are almost entirely protein, and protein is unforgiving: a few degrees or thirty seconds too long can take you from silky to rubbery. This guide covers every common method with precise times and practical techniques.

Boiled Eggs

The term "boiled" is slightly misleading. For the best results, eggs should be cooked at a gentle simmer or even started in cold water, not subjected to a rolling boil, which causes them to bounce around and crack.

The Method

Use eggs straight from the fridge; consistent starting temperature gives consistent results. Bring a saucepan of water to a full boil. The pan should be large enough that the eggs sit in a single layer. Gently lower the eggs into the water using a slotted spoon. Reduce the heat to maintain a gentle simmer (small bubbles, not a vigorous roll). Start your timer from the moment the eggs go in.

When the timer finishes, transfer the eggs immediately to a bowl of ice water. This stops the cooking and prevents that unpleasant grey-green ring from forming around the yolk (caused by a reaction between iron in the yolk and sulphur in the white, which accelerates with prolonged heat).

Timing Guide (from fridge, into simmering water)

The 7-minute egg is arguably the most useful. The yolk is thick, jammy, and deeply flavoured. It is perfect for ramen, salads, toast, and grain bowls. If you cook eggs regularly, the 7-minute egg is worth mastering first.

Peeling

Older eggs peel more easily than very fresh ones because the albumen (white) gradually pulls away from the shell membrane as the egg ages. If you are planning to boil and peel eggs, use eggs that are at least a week old.

To peel, crack the egg gently all over by rolling it on the worktop, then peel under a thin stream of cold running water. The water gets between the membrane and the white and makes the shell slide off cleanly.

The Cold-Start Alternative

Some cooks prefer to place eggs in cold water, bring it to the boil, then turn off the heat and leave the eggs covered for a set time (typically 10-12 minutes for hard-boiled). This method is gentler and reduces cracking, but the timing is less precise because it depends on the volume of water, the power of your hob, and the size of the pan. The simmering method above is more reliable and reproducible.

Scrambled Eggs

There are two fundamentally different approaches to scrambled eggs, and the one you choose depends entirely on what you want to eat.

Low and Slow (French Style)

This method produces small, soft, creamy curds with an almost custard-like texture. It takes longer and requires more attention, but the result is vastly superior to the dry, rubbery scramble most people settle for.

Method: Crack 3 eggs into a bowl and beat them with a fork until the yolks and whites are fully combined. Season with a pinch of salt. Place a non-stick saucepan (not a frying pan) over the lowest possible heat. Add a generous knob of butter (about 15g) and let it melt gently. Pour in the eggs.

Stir continuously with a spatula or wooden spoon, scraping the bottom and sides of the pan. The eggs will seem to do nothing for a while. Be patient. After 3-4 minutes, small, soft curds will begin to form. Keep stirring gently, moving the curds around the pan. Pull the pan off the heat every 30 seconds or so to prevent the bottom from overcooking, then return it. The total cooking time should be 7-10 minutes.

Remove the pan from the heat when the eggs are still slightly wetter than you want them. They will continue to cook in the residual heat of the pan. Stir in a tablespoon of creme fraiche or double cream (or another knob of butter) to stop the cooking and add richness. Serve immediately on warm toast.

Hot and Fast (American Diner Style)

This produces larger, drier, more distinct curds. It is quicker and more casual.

Method: Beat 3 eggs with salt. Heat a non-stick frying pan over medium-high heat. Add a knob of butter and let it foam. Pour in the eggs. Let them set for about 20 seconds without stirring, then use a spatula to push large sections of egg from the edges toward the centre. Let the uncooked egg flow into the gaps. Repeat this folding and pushing technique 3-4 times. The whole process takes about 90 seconds. Remove from the heat while the eggs are still slightly glossy. They will firm up on the plate.

The Rules for Both Methods

• Do not add milk. It dilutes the egg flavour and makes the curds watery. If you want richness, use butter or cream.
• Season with salt before cooking. Salt added to raw eggs breaks down the proteins slightly and produces a more tender curd. Kenji Lopez-Alt's testing at Serious Eats confirmed this convincingly.
• Never overcook. Rubbery scrambled eggs cannot be rescued. When in doubt, pull them off the heat earlier. You can always cook them a few seconds more, but you cannot uncook them.

Poached Eggs

Poached eggs have an undeserved reputation for difficulty. The technique is straightforward once you understand a few principles.

The Fundamentals

Use the freshest eggs possible. In a fresh egg, the thick albumen (the dense, gel-like part of the white closest to the yolk) holds tightly around the yolk. As an egg ages, this thick white thins and loosens, which is why older eggs produce wispy, ragged poached eggs with long trailing tendrils. If you are buying eggs specifically for poaching, use them within a few days of purchase. Free-range eggs from a good supplier tend to have firmer whites.

Use barely simmering water. The water should have small bubbles rising from the bottom but should not be boiling. A rolling boil will tear the delicate white apart.

Add a splash of vinegar. White wine vinegar or distilled malt vinegar both work. About one tablespoon per litre of water is sufficient. The acid causes the outer layer of the egg white to coagulate faster, helping the egg hold its shape. It does not make the egg taste of vinegar.

The Method

Fill a deep saucepan or saute pan with about 8-10cm of water. Add the vinegar. Bring to a gentle simmer. Crack an egg into a fine-mesh sieve over a bowl and let the thin, watery white drain away for about 20 seconds. This step removes the loose white that would otherwise create wispy tendrils. Transfer the egg from the sieve into a small cup or ramekin.

Create a gentle vortex in the water by stirring with a spoon in one direction. This is the vortex method, and it works by wrapping the white around the yolk as the egg spins. Gently tip the egg from the cup into the centre of the vortex.

Cook for exactly 3 minutes for a runny yolk with a fully set white. Remove with a slotted spoon and drain briefly on kitchen paper.

Poaching Multiple Eggs

The vortex method works best for one egg at a time. For multiple eggs, skip the vortex. Instead, bring the water to a simmer, add the vinegar, and gently slide each egg in from a ramekin at different spots around the pan. Cook for 3-4 minutes. The eggs will not be quite as neat, but they will still be good. You can tidy up any ragged edges with a knife or kitchen scissors after draining.

Make-Ahead Poached Eggs

For brunch service or entertaining, you can poach eggs in advance. Cook them for 2.5 minutes (slightly underdone), then transfer to a bowl of ice water. They will keep for up to 8 hours in the fridge. To serve, reheat by slipping them into gently simmering water for 60-90 seconds.

Fried Eggs

There are two main styles, and the difference is the amount of fat and the heat level.

Sunny-Side Up with Crispy Edges

Heat a tablespoon of olive oil or butter in a non-stick frying pan over medium-high heat. When the oil is hot and shimmering (or the butter is foaming), crack the egg directly into the pan. The white should sizzle immediately on contact. Cook without touching for 2-3 minutes. The edges will turn golden and lacy, the white will set, and the yolk will remain runny. Season with salt and pepper. Slide onto a plate.

For extra-crispy edges, use a bit more oil and tilt the pan to baste the edges with hot fat using a spoon.

Basted (Over-Easy Without Flipping)

This method cooks the top of the egg gently without flipping, producing a uniformly set white with a runny yolk and no crispy edges.

Heat butter in a non-stick pan over medium-low heat. Crack the egg in. Once the white begins to set on the bottom, add a tablespoon of water to the pan and immediately cover with a lid. The steam from the water gently cooks the top of the egg. After 2-3 minutes, the white will be fully set and the yolk will have a thin, opaque film over it but remain liquid underneath. This is particularly useful for eggs that will sit on top of dishes like rice, noodles, or hash.

Omelettes

French Omelette

The French omelette is pale, soft, and creamy with no colour on the outside. It is rolled rather than folded and has a slightly runny (baveuse) centre.

Beat 3 eggs with salt until uniform. Heat a 20cm non-stick pan over medium-high heat. Add a generous knob of butter and swirl to coat. When the butter is foaming but not browning, pour in the eggs. Immediately begin stirring the eggs with a fork or chopstick, shaking the pan simultaneously. This creates very small, soft curds. After about 30 seconds, stop stirring and let the bottom set into a thin, uniform layer. The top should still be slightly wet.

Tilt the pan away from you and use the fork to fold the near edge of the omelette over toward the centre. Tap the handle of the pan sharply to slide the omelette to the far edge. Fold it out onto a plate, seam-side down. The whole process takes about 90 seconds. The exterior should be smooth and pale yellow; the interior soft and barely set.

American-Style (Filled) Omelette

Heat butter in a larger pan over medium heat. Pour in the beaten eggs and let them set for about a minute, lifting the edges with a spatula to let uncooked egg flow underneath. When the top is mostly set but still slightly moist, add fillings (cheese, ham, mushrooms, herbs) to one half. Fold the other half over the top. Cook for another 30 seconds, then slide onto a plate. This omelette has more colour and a firmer texture than the French version.

Baked Eggs and Shakshuka

Baked eggs (oeufs en cocotte) are eggs cracked into a dish and baked in the oven, typically in a flavourful sauce or with cream. Shakshuka is the North African and Middle Eastern variation, where eggs are baked in a spiced tomato and pepper sauce.

Shakshuka

Heat olive oil in an oven-safe frying pan. Cook diced onion and sliced peppers until soft, about 8-10 minutes. Add garlic, cumin, paprika, and a pinch of chilli flakes. Cook for one minute. Add a tin of chopped tomatoes, season with salt, and simmer for 10-15 minutes until the sauce thickens slightly.

Make small wells in the sauce with a spoon and crack an egg into each well. Transfer the pan to an oven preheated to 180C. Bake for 8-12 minutes, depending on how runny you want the yolks. The whites should be fully set while the yolks remain liquid. Finish with crumbled feta, fresh coriander, and a drizzle of extra virgin olive oil. Serve with crusty bread for dipping.

Egg Freshness and Storage

The Water Test

Fill a bowl with cold water and gently lower an egg into it.

• Sinks and lies flat on its side: Very fresh (less than a week old). Best for poaching.
• Sinks but stands upright on one end: Still good, about 1-2 weeks old. Good for boiling (easier to peel).
• Floats: Old and potentially spoiled. Discard it.

As an egg ages, moisture escapes through the porous shell and is replaced by air, which collects in the air cell at the broad end. This is why older eggs float and also why they stand on end before floating fully.

Storage

In the UK, eggs are not washed before sale (unlike in the US), which means the natural protective coating (the cuticle or bloom) remains intact. This is why British eggs can be stored at room temperature. However, once refrigerated, eggs should stay refrigerated, because moving them from cold to warm creates condensation on the shell, which can allow bacteria to penetrate.

For consistent cooking results, store eggs at a consistent temperature and note which method you use. The timing guides in this article assume eggs taken from the fridge.

Eggs keep for at least 3-4 weeks from the laying date when stored properly. The best-before date on the box is a reliable guide.

Summary

Eggs respond to attention. The difference between a perfect poached egg and a ragged mess, between silky scrambled eggs and a rubbery lump, between a golden fried egg and a burnt one, is almost always a matter of temperature, timing, and a few seconds of care. None of the techniques in this guide are difficult, but all of them repay precision. Start with the ones you cook most often, pay attention to the details, and the improvement will be immediate.