Bird's nest is a kind of valuable nourishing nutrients, but in many merchants selling bird's nest, there is a kind of bird's nest called blood bird's nest, what is blood bird's nest? Let's find out more about it.
01
Bird's nests feed on algae, insects, and ants, which are rich in minerals, so their saliva contains a lot of minerals.
02
The minerals contained in the rock wall where the swiftlet nests will penetrate into the bird's nest through the contact surface between the nest and the rock wall; and the water that falls down the rock wall will also cause the bird's nest to change its color if it drips into the bird's nest.
03
The temperature inside the cave where swiftlets nest is high due to poor air circulation, and the higher the temperature, the faster the oxidation and discoloration of the minerals.
04
Near the entrance of the cave, the bird's nests are mostly pearly white, and as you go inside, pearly yellow and orange "yellow bird's nests" start to appear, and when you reach the depths of the cave, you will see orange-red or gray-red bird's nests.
05
The red blood swiftlet, which was once regarded as a "treasure" in the market, is artificially produced. The natural blood swiftlet does not have such a brilliant color and smells fishy, so it is not suitable for consumption.