Eggs are mainly water, with some proteins, lipids, and minerals thrown in for good measure. Eggs are a flexible item that may be cooked alone or mixed with other ingredients to make sauces, custards, batters, and foams. They can also be used as an ingredient instead of bread to make sandwiches. Eggs are one of the most popular foods worldwide. They are inexpensive and easy to prepare. Not only that, but they also have many health benefits. They are low in fat and high in protein with four units of energy per egg. That means one egg has about half the calories of a regular sandwich! Eggs are also rich in zinc, vitamin B12, choline, and iron. The eight main components of an egg: protein, albumin; globulin; leucoproteins; lipid (fat); carotenoids (provitamin A); chlorophyll; and mineral elements including calcium, copper, iodine, magnesium, phosphorus, potassium, sodium, sulfur, and zinc. Eggs are a great source of energy and nutrients. They help provide essential vitamins and minerals that our bodies need each day. Eating two eggs a week is enough to meet your daily vitamin B12 requirement. The more commonly eaten types of egg include: fresh, frozen, or dried.