To make hard boiled eggs, the recommended cooking time varies slightly depending on the desired yolk texture and method, but generally follows these guidelines:

• Place eggs in a single layer in a pot and cover with cold water by about 1 inch.
• Bring water to a rolling boil over high heat.
• Once boiling, turn off the heat and cover the pot, letting the eggs sit in the hot water for 10 to 12 minutes.
  • 10 minutes yields eggs with vibrant, creamy yolks.
  • 12 minutes results in fully hard boiled eggs with firm, opaque yolks

• Alternatively, some methods suggest boiling or steaming eggs for about 11 to 15 minutes for fully hard boiled eggs

• After cooking, immediately transfer the eggs to an ice bath for at least 10 to 15 minutes to stop the cooking process and make peeling easier

In summary, a reliable approach is to boil eggs until water reaches a rolling boil, then remove from heat and let them sit covered in hot water for 10-12 minutes, followed by an ice bath. This method consistently produces easy-to- peel hard boiled eggs with firm yolks.