The cooking laboratory
Control heat, time and movement to move from runny to firm, tender to crisp. Start with the visual cues, then use the timer for a repeatable result.
Doneness explorer
Times are useful starting points. Egg size, starting temperature, altitude, pan and hob all change the result.
Jammy finish
Choose a method
Choose the finish
Method map
These timings assume large hen eggs. Treat them as a starting range and use the texture cues above.
Lower eggs gently into already simmering water for repeatable timing.
Fresh eggs hold together best; crack into a cup before lowering.
Take the pan off the heat while the eggs still look slightly wetter than you want.
A cooler pan gives tender whites; hotter fat creates lacy, crisp edges.
Cook fillings first and keep them modest so the egg sets evenly.
Shallow dishes cook faster; a water bath softens the heat for custards.
What heat is doing
Heat disturbs tightly folded proteins, allowing them to connect with one another.
The clear white becomes opaque and liquid turns into a soft gel.
Too much heat tightens the network, producing dry, rubbery eggs and sometimes visible water.
Troubleshooting
Most egg problems come back to excessive heat, excess time or too much added moisture.
Why: Heat was too high or cooking continued too long.
Next time: Lower the heat and stop earlier; residual heat keeps working.
Why: A firm-boiled egg was overcooked or cooled slowly.
Next time: Transfer it straight to cold water once cooked.
Why: The eggs were cooked too hot, or wet additions released liquid.
Next time: Use gentler heat and cook watery vegetables separately.
Why: The egg is older or the water is boiling too strongly.
Next time: Use a fresher egg and keep the water at a bare simmer.
Why: The centre is too wet, too full or stuck to the pan.
Next time: Use a suitable pan, loosen the edge and reduce the filling.
Why: Very fresh eggs often cling more tightly after boiling.
Next time: Chill thoroughly and peel under running water; slightly older eggs usually peel more easily.
International safety note
Official advice varies. US guidance lists 71°C / 160°F for egg dishes such as quiche and casseroles; Canadian guidance lists 74°C / 165°F for egg dishes.
UK guidance allows raw or lightly cooked hen eggs for most people, including many vulnerable groups, when they carry the British Lion mark or come from an equivalent recognised assurance scheme. Other eggs should be cooked thoroughly, and people with severely weakened immune systems should seek appropriate medical advice.