how long to boil an egg for hard boiled eggs
ADD cold water to cover eggs by 1 inch. HEAT over high heat just to boiling. REMOVE from burner. COVER pan. LET EGGS STAND in hot water about 12 minutes for large eggs (9 minutes for medium eggs; 15 minutes for extra large). DRAIN immediately and serve warm. OR, cool completely under cold running water or in bowl of ice water, then REFRIGERATE.