Place the water heater at a suitable height of approximately 84 cm to 112 cm above the ground. Hold and tilt the egg with the large end against the hole in the candyer. Grasp the small end and use your thumb and the tips of your first two fingers to quickly rotate the egg left and right.
This method determines the condition of the yolk, white and air cells. It also detects blood stains, flesh stains and bleeding egg whites. Fresh eggs have visible air cells and a thin albumen. Avoid eggs with blood or meat stains, bloody whites, and cracked shells.