yet enormously complex, the egg is one of nature's marvels. The real
facts about eggs have been scrambled in recent years, as they've gotten a
bad rap for being high in cholesterol and fat. This singular view has
ignored the enormous benefit of fresh eggs to the human body and the
entire culinary world.
Nature
designed the egg as the food source for developing chicks. Eggs, in
particular chicken eggs, are also an excellent food for humans because
of their high protein content, low cost and ready availability.
The
most nutritious eggs ARE the freshest, from your local farm. Nutrition
declines with age in an egg that must be shipped across the state or the
country. Often, eggs must be additionally treated for such a long
journey, even if that means exposing them to unnatural treatment until
purchased by you.
One of the stunning facts about eggs comes from
the Food and Agriculture Organization of the United Nations, which has
created a scale to measure the efficiency with which protein is used for
growth in the human body. This is called a "Biological Value".
Egg
contains the highest quality food protein known. Based on essential
amino acids it provides, egg protein is second only to mother's milk for
human nutrition. On a scale with 100 representing the top efficiency,
eggs are rated at 93.7 percent in protein efficiency.
One of the
many beneficial elements in an egg is called Biotin, one of the B
vitamins which play an important role in cell metabolism and the
utilization of fats, proteins and carbohydrates in the human body.
Biotin is present in egg yolk. An egg white omelet may have less fat,
certainly has no flavor, but also omits this important B vitamin.
While
eggs are widely known as breakfast entrees, they also perform in many
other ways for the knowledgeable cook. Their cooking properties are so
varied, that they have been called "the cement that holds the castle of
cuisine together".
When you know the true facts about eggs, you'll
realize that there is barely an area of the kitchen, for the
professional or the home cook that eggs don't touch.
Eggs can:
1) Bind - meatloaves, Lasagna, croquettes
2) Leaven - baked goods, souffles, and sponge cakes
3) Thicken - as in custards and sauces
4) Emulsify - mayonnaise, salad dressings, hollandaise sauce
5) Coat or Glaze - cookies or breads
6) Clarify soups - to make consomme
7) Inhibit crystallization - in boiled candies and frostings
8) Garnish - chopped egg whites and/or yolks give a finishing touch.
Eggs
are composed of three basic parts, the shell, the yolk and albumen. The
shell is made of calcium carbonate, and prevents microbes from entering
as well as moisture from escaping. It's the casing that protects the
egg during handling and transport. The color of the egg shell is
determined by the breed of the hen and has no bearing on its nutritional
value or flavor.
The egg yolk is the yellow portion of the egg
which takes up only 1/3 of the egg's mass, but accounts for
three-quarters of all the calories, minerals, vitamins, and all of the
fat. The yolk contains lecithin, which is an emulsifier that enables us
to make mayonnaise, dressings, and hollandaise sauce.
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