What does the green circle around the eggs mean?

inconvenience and obtain a result worthy of the most refined dishes.

 

 
The simple method for perfect hard-boiled eggs
You don’t have to be a Michelin-starred chef to make perfect hard-boiled eggs every time. Here’s a simple technique to follow:

    Start by immersing the eggs in a pot of cold water.
    Bring to a boil, then turn off the heat as soon as the water begins to simmer.
    Cover the pot to retain the heat, then leave the eggs in the hot