First, the eight-character policy of judging the quality of bird's nest:
A look at two smells, three views, four views, five touches, six touches, seven touches and eight products.
1 Look:
Look at the color, natural bird's nest is gray and yellow.
Bleached bird's nest is particularly white, and the tiny fluff is hard to see.
Because fluff will also be bleached.
2 smell:
Smell it. It smells like fish and wood mold.
No smell of medicine.
3 views:
Shredded capsules and bird's nest are hemispherical or boat-shaped.
There are reticular filaments in it.
The patched swallow silk is irregular in structure.
4 check:
Looking at the hair head, the foaming rate of bird's nest without glue is relatively high.
After soaking, the filaments are clear and will not agglomerate.
5 touch:
Touch the silk strips, and the soaked silk strips have good tensile elasticity.
Not easy to break or paste.
6 touch:
Feel dry, dry, not easy to breed bacteria and mold.
7 burns:
Roasted shredded swallows, natural bird's nest has the smell of singeing.
Fake goods have a pungent smell similar to the burning of plastic products.
8 projects:
Taste, natural bird's nest stew.
With obvious protein fragrance, crystal clear.
The taste is delicate, smooth and elastic.
No fishy, gelatinous, or mushy smell.
Second, how to choose high-quality bird's nest?
0 1 clear texture
The color is transparent and yellowish, shiny and smells like bird's nest.
The fibers on the bird's nest should be clearly visible.
Clear texture, different thickness, the denser the better.
The filaments inside the bird's nest are messy and loose.
The lamp is big and thick.
The shape of the top bird's nest should be complete.
A large piece (about three fingers falling together)
If swallows nest on the beams, the nest will be boat-shaped.
If swallows nest in the corner, the nest will be triangular.
The inner silk is obvious.
In addition, there are processed, strip-shaped and cake-shaped.
03 foaming rate
Slice and pluck the bird's nest after soaking in water.
The ratio of the weight after draining to the weight of dry goods is called foaming rate.
The factors affecting the foaming rate are as follows
The water content after draining is different from that of the bird's nest batch.
The higher the foaming rate, the better, generally 5-8 times.
The real quality of bird's nest depends on the taste after stewing.
A small amount of young hair
After the bird's nest is soaked, you will see a small amount of young hair.
If it is found to be hairless and extremely clean, it is probably washed by hand.
Smells like fish.
Natural bird's nest will smell a little fishy.
After soaking in wet water, the smell is stronger.
Fake bird's nest such as pigskin is fried.
Even with the neutralization of protein, it is difficult to hide its greasy taste.
Others, such as seaweed, not only have no smell of bird's nest protein.
And there is a strong smell of seaweed.
There are also some chemically treated bird's nest.
After stewing, it will smell of chemicals, so pay more attention.
Rough appearance
If you choose Yan Deng,
When you pick it up with your hands, you will feel the roughness of the swallow lamp.
Moreover, it is particularly brittle, makes a noise and is easily broken.
The surface of the processed bird's nest is coated with substances.
It's dry and thick, but it's just "dried skin and dried meat"
Not only is it not easy to break, but it is also elastic.
The soaked water appears turbid and even bubbles appear.
Different colors
Because every swallow eats different food.
So their saliva will be different in color.
So each piece of bird's nest has different shades of color.
Generally speaking, a good bird's nest should be thin and dense.
The shape is good, and it smells a little fishy.
Feel dry (keep a little moisture) with a small amount of fine hair, and the swallows' horns are thinner.
In addition, bird's nest can also be divided into deep and dark.
This is because swallows don't eat pure white food every day
So its saliva will not be pure white.