What causes the green ring around hard-boiled eggs?

Whether you like them scrambled, sunny-side up, or hard-boiled, eggs are an excellent choice because of many reasons. For one, they are high in protein, essential for muscle repair and growth. Further, eggs are rich in vitamins and minerals, with the yolk containing choline which supports the function of the brain.

Also, they contain healthy fats and are low in calories, which makes them a great breakfast for both little children and adults.

If you are one of those people who prefer their eggs hard-boiled, you have certainly noticed that green color ring around the yolk.