Free-range eggs refer to eggs laid by free-range chickens, while commercial eggs refer to eggs laid by chickens raised on farms or by specialized poultry farmers using formulated feed. Free-range eggs contain no artificial antibiotics, hormones, or pigments. Compared to regular eggs, their egg whites are thicker, with 5-6% higher protein content, 3% lower fat, and 19.8% lower cholesterol. They have a fragrant and fresh taste with a tender texture and no fishy smell.
Free-range eggs are nutrient-rich and are an important ingredient in beauty diets for women. One egg a day is not excessive.
If your blood cholesterol is not high, there is no need to deliberately discard the yolk. Eggs are the food source with the highest quality protein.
Eggs contain high-quality protein with the highest biological availability among natural foods.
A woman's beauty, hair, and skin all require sufficient protein to stay healthy, and eggs are the simplest, most convenient, and most balanced source of protein.
In addition, the yolk also contains various B vitamins, vitamin A, vitamin D, and vitamin E, and yolk oil has anti-aging properties.
When you crack open a free-range egg, the egg white is clear and thick, with a slight bluish-yellow tint; the yolk is golden yellow, floats on top of the white, and does not sink to the bottom. A toothpick inserted into the center of the yolk can stand upright. Its shell is tough and thick, rich in calcium, and not as brittle and thin as the shell of a commercial egg.
When you peel a cooked free-range egg and squeeze it in your hand, even if it is flattened, the white will not crack, and it remains a whole egg. Commercial eggs have slightly larger, pale yellow yolks.
Furthermore, eggs laid by chickens whose feed contains colorants will have red yolks and are often sold as free-range eggs. Although they are similar, they can be distinguished:
First, the shells of the former are rougher; free-range eggshells are finer and harder.
Second, the yolks of feed eggs are entirely red, while free-range eggs can have both red and yellow yolks. This is because only chickens that eat certain special grass seeds will lay eggs with red yolks.
Third, the egg whites of feed eggs are thin and runny, with smaller yolks; free-range egg whites are thick, clear, and viscous.
After a few comparisons, you will gain experience and it will become easy to tell the two types of eggs apart.
1. From the appearance, free-range eggs are slightly smaller and lighter in color. Fresher ones have a thin, white film. Commercial eggs have darker shells.
If you are still not sure, you can crack the egg after purchasing it; a golden yellow yolk indicates a free-range egg; a pale yellow yolk indicates a commercial egg. After a few comparisons, you will gain experience and it will become easy to distinguish between the two types of eggs in the future.
2. A true free-range egg is indeed more delicious than any kind of egg sold on the market. A true free-range egg, even if it's just boiled in plain water, is very delicious.
3. Although free-range eggs are smaller in size, their yolks are not smaller than those of commercial eggs. Commercial eggs are larger with more egg white—more water, which you can see when frying them, as they make a sizzling sound when they hit the oil.
4. The egg white of a free-range egg is clear and thick, slightly bluish-yellow, and the yolk is golden yellow, floating on the egg white without sinking to the bottom. A toothpick inserted into the center of the yolk can stand upright. Its shell is tough and thick, rich in calcium, and not as brittle and thin as other eggshells. When you peel a cooked free-range egg and squeeze it in your hand, even if it is flattened, the white will not crack, and it remains a whole egg.
5. Look at the brightness and cleanliness of the eggshell. If the surface is very shiny and smooth, it means it has been stored for a longer time. Fresh eggshells have a stronger three-dimensional texture. Pick up the egg and shake it gently next to your ear; a sound indicates it is not fresh. Place the egg in a dark place and shine a small flashlight on the larger end; the smaller the air cell (the space inside the egg), the fresher it is.