[Experimental conditions]
1. It is said that the cold egg in the refrigerator is likely to crack the shell if it is boiled suddenly, so it is usually boiled after being taken out at room temperature, but this experiment was just boiled right away from the refrigerator.
2. The thick salt and vinegar solidify the protein so that when the egg cracks, the egg no longer flows through the gap, so they added 2 tablespoons each.
3. The water was not hot or cold, but just purified water.
4. There is also a way to boil water first and then put it in boiling water, but this experiment was conducted by measuring the time from the time when you receive water from the beginning and turn on the gas stove.
5. There are many ways to boil the gas stove on medium heat, but it was unclear how much each household has, so I just raised the gas stove to its maximum firepower from the beginning to the end and conducted an experiment. But there will be a slight difference in firepower between families.

I put eggs in a pot, poured water to cover the egg a little, and added 2 tablespoons of thick salt and 2 tablespoons of vinegar.

Turn on the gas stove and start the experiment.

From 8 to 14 minutes, I took out eggs one at a time and soaked them in cold water.

I collected the eggs that I took out for 8 to 14 minutes.

I'll peel an egg one by one.
The egg that was taken out in 8 minutes was not peeled well, so the shape of the egg was disturbed, and the white and yolk were not fully cooked.

I failed to peel the egg that I took out in 9 minutes. As expected, the white and yolk are not fully cooked.

The egg taken out in 10 minutes is in the form of a soft-boiled egg, but the yolk has spilled a little.

The egg taken out in 11 minutes looks like the most ideal half-cooked egg form ever made.

The egg that was taken out in 12 minutes looks like a hard-boiled egg, but it looks more like an intermediate form between soft-boiled and hard-boiled than completely hard-boiled egg.

The egg taken out at 13 minutes looks like a well-made hard-boiled egg.

Eggs taken out in 14 minutes are completely hard-boiled but dry. I think it would be good to use for cooking.

The conclusion is that under the above experimental conditions, the heat of the gas stove varies from household to household
I think it takes 10 to 11 minutes for soft-boiled eggs, 13 to 14 minutes for hard-boiled eggs, 12 minutes for soft-boiled eggs, 11 to 13 minutes for easy-boiled eggs, and 13 to 14 minutes for cooking.

[Related recipe]
How to boil 1 egg in the microwave
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