⏱️ Egg boiling methods
Soft, jammy, or hard — timed for the temperature water actually boils
Sea-level charts treat “boil for 10 minutes” as a method. It is not. Water at elevation is cooler when it boils, so the same clock time leaves the white set and the yolk behind. These pages are the three doneness settings on the boiling eggs at altitude calculator — not a generic “how long to boil eggs” article, and not a city-by-city list.
Pick the yolk you want, enter your altitude (or detect it), and set your own timer. Then chill.
Immediately put cooked eggs in cold water to make them easy to peel. Ice water for a few minutes also stops them from cooking further in the shell, which matters more after the extra time altitude already added.
Soft-boiled eggs
Set whites and a runny yolk for toast and breakfast. The window is narrow, and a cooler boil at elevation stretches it. If the center turns to custard, you have crossed into jammy.
Read the method →
Jammy eggs
Custardy yolks for ramen and rice bowls: the white is set and the yolk spreads slowly. A sea-level seven-minute habit is often still soft once the water boils below 100°C. Set the calculator to jammy, then marinate only after the peel.
Read the method →
Hard-boiled eggs
Fully set yolks for peeling, packing, deviled eggs, and egg salad. High-altitude hard-boiled eggs need the biggest time bump. Stop when your timer ends and chill so the yolk does not dry out or pick up a gray ring.
Read the method →
Why the same method takes longer up here
Egg white starts setting around 62°C (144°F). Yolk proteins start around 65°C (149°F) and need more heat for a firm center. At sea level the pot is 100°C (212°F). In Denver, about 5,280 ft, it is closer to 95°C (203°F) — an example, not a city recipe. That gap is small on a thermometer and large on a clock, especially for a fully set yolk.
The calculator adds about 3% time for every degree the boiling point sits below 100°C, then layers egg size, fridge vs room-temp start, hot vs cold water, and how many eggs are in the pot. Use the science page if you want the physics; use a method page if you want the pan-side routine.
When to pick soft, jammy, or hard
Soft is breakfast: a white that holds and a yolk that runs. Jammy is the custard middle, the one a sea-level seven-minute habit misses first when the pot is cooler. Hard is fully set, for peeling, packing, and mixing. If you are unsure, decide what you will do with the yolk after the ice bath, then set that doneness on the boiling eggs at altitude calculator.
Do not average them. Thirty seconds past soft is often jammy. A jammy center will not mash cleanly for deviled eggs. A hard yolk will not sauce a piece of toast. Each card above is the pan-side routine for one setting.
After they come out of the pot
Jammy eggs go to ramen eggs. Hard-boiled eggs go to deviled eggs or egg salad. Soft-boiled eggs are usually eaten as-is. The recipes index lists those three — not a cookbook. Read the science of boiling eggs if you want the boiling-point math before you choose.
Frequently asked questions
When should I choose soft, jammy, or hard?
Choose soft when the yolk should run onto toast. Choose jammy when you want custard for ramen eggs. Choose hard when you will mash or chop the yolk for deviled eggs or egg salad. All three use the same pot. Only the calculator’s doneness setting changes.
Is this a sea-level minute chart?
No. “Boil for 10 minutes” assumes water at 100°C. These pages are the three doneness settings on the boiling eggs at altitude calculator. The form applies elevation, egg size, starting temperature, water start, and batch size. This hub does not reprint a coastal clock.
Do you have a page for Denver or my city?
No. Denver and other places show up only as examples of elevation. Type your altitude or detect it on the boiling eggs at altitude calculator. A city URL would repeat the same pot with a different place name.
Which recipe uses which doneness?
Jammy eggs go to ramen eggs. Hard-boiled eggs go to deviled eggs or egg salad. Soft-boiled eggs are usually eaten as-is. The science page explains why the water is cooler before you pick one.