How to Hard-Cook Eggs
Let’s avoid rubbery, overcooked, dry eggs, shall we?
Immediately placing the eggs into an ice bath is crucial in stopping the cooking process. You will likely notice the ice has melted when the 10 minutes are up!
This is the difference of turning off the heat when the water is just simmering versus when the water actually comes to a boil. The eggs on the right were brought to a slow boil and are perfectly cooked all the way through. The eggs on the left, which only came to a simmer before being removed from the heat, are technically cooked and safe to eat, but the yolks were quite soft and slightly wet in the center.