Unique Hard Boiled Egg Cooker. This egg cooker I tried it, it works like this you put the number of eggs in tray (up to 6 eggs) and place pot, Fill water to level to the desired way you wish to cook eggs very soft, soft and med add heat and wait the egg cooker begins to whistle when the eggs are ready. What a way to cook a egg. This item is in great shape the black knob has no cracks. The size is 5.3/4" tall by 6" at widest point.