Don't you think boiling eggs is super simple? Just add water and eggs and cook for a while. Is it really that simple? Actually, there are a few tricks to boiling eggs.
1. Soaking
Before boiling, it's best to soak the eggs in cold water for a while, then place them in a pot of cold water and bring to a boil. This way, the shells are less likely to crack. Of course, this is just one of the methods to keep the eggs intact.
2. Heat
When boiling eggs, using high heat can cause the air inside the shell to expand rapidly, leading to cracks. Using low heat, on the other hand, prolongs the cooking time and makes it difficult to control the doneness. It has been proven that medium heat is the most suitable for boiling eggs.
Shepherd's Purse Flower Boiled Eggs
3. Time
Once the heat is set, accurately controlling the cooking time allows you to control the doneness as you wish. For example, for a soft-boiled egg, cook for 3 minutes after the water boils. At this point, the white is set, but the yolk is still runny. For a jammy egg, cook for 5 minutes after the water boils. The white is set, and the yolk is thick, soft, and smooth. For a hard-boiled egg, cook for 7 minutes after the water boils. The white is set, and the yolk is firm. It's important to note that you should not extend the cooking time for hard-boiled eggs. When an egg is boiled in water for too long (over 10 minutes), a series of chemical changes occur inside, reducing its nutritional value.
4. Stirring
To keep the yolk centered in the white, you should stir the eggs continuously in one direction with a spoon after they are in the pot, creating a whirlpool in the water until they are cooked. As for the principle behind this, it's probably related to the concepts of centrifugal and centripetal force in physics.
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