Most plastic, glass, or ceramic mugs and lids will say “Microwave Safe” on the bottom. Use a mug and lid that specifically says microwave safe. Do not use metal materials or foil in the microwave. Using a measuring cup, measure out ½ cup of water. Pour the water into the mug. . Using the side of the mug, tap the egg firmly once or twice to break through the shell, taking care to not break the yolk. Pry open the egg halves, and let the egg fall into the mug of water and make sure to prick the yolk with a fork to prevent mess. If the egg is not submerged in water, use the measuring cup to add another ¼ cup of water. The egg should be submerged now.
Get a microwave safe mug and lid. Fill the microwave safe mug with ½ cup of water. Crack the egg into the mug Ensure the egg is completely submerged in water.