To cook a soft-boiled egg, place a large egg straight from the refrigerator into a saucepan of boiling water. Let it boil for exactly 6 to 7 minutes. Start your timer as soon as the water returns to a full boil. After that time, move the egg to an ice water bath to stop the cooking. This timing gives you a fully set white and a warm, runny yolk.
How long to cook a egg for soft boiled exactly?
The most reliable range for a large egg is 6 to 7 minutes in boiling water. Six minutes will produce a very runny yolk with a slightly tender white. Seven minutes gives a firmer white and a yolk that is still liquid but thicker around the edges. For medium eggs, use 5 to 6 minutes. For extra‑large or jumbo eggs, add 30 seconds to 1 minute. Altitude also matters — at 5,000 feet or higher, add about 1 minute because water boils at a lower temperature.
Always start with cold‑from‑the‑fridge eggs unless a recipe specifies room temperature. Placing cold eggs into hot water is standard and produces consistent results. Do not boil the egg for longer than 7 minutes if you want a runny center. After 8 minutes the yolk begins to set until it becomes hard‑boiled.
What factors affect soft‑boiled egg cooking time?
Several things change the time you need. The size of the egg is the biggest factor. A jumbo egg needs about 1 minute more than a large egg. The starting temperature also matters. If you use eggs straight from the fridge, your time will be slightly longer than if you let them sit at room temperature for 15 minutes. The altitude of your kitchen changes how hot the water gets. At higher elevations, water boils at a lower temperature, so the egg cooks more slowly.
The type of pot you use matters too. A wide pot with lots of water takes longer to return to a boil after you add the eggs. A smaller pot with less water comes back to a boil faster. That is why most recipes tell you to time from when the water returns to a boil, not from when you drop the eggs in.
Finally, your personal preference for “runny” is a factor. Some people like a very liquid yolk (6 minutes). Others prefer a yolk that barely flows (7 minutes). The only way to know your ideal time is to test a few eggs and adjust.
How to cook a soft‑boiled egg step by step
Bring a saucepan of water to a rolling boil. The water should be deep enough to cover the egg by at least an inch. Use a ladle or a slotted spoon to lower the egg gently into the water. This prevents cracking. Set a timer for 6 minutes if you want a very runny yolk, or 7 minutes for a slightly firmer one.
While the egg cooks, prepare a bowl of ice water. When the timer goes off, transfer the egg to the ice bath using a slotted spoon. Let it sit for 30 seconds to 1 minute. This stops the cooking and makes the egg easier to handle. Tap the shell gently all over with the back of a spoon, then peel under cool running water.
For serving, place the peeled egg in an egg cup or small bowl. Slice off the top with a knife or a clean pair of scissors. Sprinkle with a pinch of salt and black pepper. The yolk should still be liquid and warm.
Can you overcook a soft‑boiled egg?
Yes. Even one extra minute beyond 7 can start to set the yolk. At 8 minutes the yolk becomes thicker and less runny. At 9 minutes it is starting to turn into a hard‑boiled egg. Overcooking also makes the white rubbery and tough.
The ice water bath is critical for preventing overcooking. If you leave the egg in the hot water even after turning off the heat, the residual heat will continue to cook the egg. Dropping it into ice water stops the cooking almost instantly.
Are soft‑boiled eggs safe to eat?
Soft‑boiled eggs are safe if the egg is fresh and handled properly. The yolk of a soft‑boiled egg does not reach a temperature that kills bacteria the way a hard‑boiled egg does. For most healthy adults, the risk is very low. However, the United States Department of Agriculture recommends cooking eggs until both the white and yolk are firm, especially for young children, pregnant women, older adults, and people with weakened immune systems.
To lower risk, use pasteurized eggs if you are concerned. Store eggs in the refrigerator at 40°F or below. Cook them within three to five weeks of purchase. Avoid eggs with cracked shells. If you are in a high‑risk group, discuss with your doctor whether soft‑boiled eggs are right for you.
Frequently Asked Questions
How many minutes for a soft‑boiled egg?
For a large egg straight from the fridge, cook for 6 to 7 minutes in boiling water. Adjust size and altitude accordingly.
Should I start the timer when the water boils or when I put the egg in?
Start the timer as soon as the water returns to a full boil after you add the egg. That gives the most consistent result.
Can I reheat a soft‑boiled egg?
It is not recommended. Reheating will cook the yolk further and turn it solid. Soft‑boiled eggs are best eaten immediately after cooking.
What is the difference between a soft‑boiled and a poached egg?
A soft‑boiled egg is cooked in its shell in boiling water. A poached egg is cooked without the shell in barely simmering water. Both can have a runny yolk, but the texture of the white differs.

