Place the egg in a small saucepan and cover with water. Bring to a full boil over medium-high heat. Once boiling, reduce slightly to a gentle boil and cook for 9-10 minutes for a fully set yolk that is still bright yellow. While it cooks, prepare a bowl of ice-cold water. When the timer is up, transfer the egg immediately into the cold water — this stops the cooking and makes peeling significantly easier. Peel gently and slice in half before placing on the plate.