Eggs are a great source of nutrition because they are high in protein and a good source of selenium, iodine, vitamin B2, molybdenum, phosphorous, vitamin B5, vitamin B12, and vitamin D. While traditionally a breakfast food, they can be appreciated around the clock in souffl?? deviled eggs, quiche, frittata, tortilla Espana, custards, and bread pudding. Keep eggs in the refrigerator, and remember that an egg a few days old will be easier to peel when hard-boiled than a fresher hard-boiled egg.