By grade: Bird's nests are often categorized into "special grade/top grade", "first grade/second grade", etc. Bird's nests are generally categorized according to the "dense, fine and sparse" of the marigolds, with the denser ones being categorized as top grade marigolds and the more dense ones being categorized as top grade marigolds. Denser bird's nests are classified as top-grade bird's nests, while sparser bird's nests are classified as second-grade bird's nests. Generally, a complete marjoram with dense fibers is classified as Grade 1, while an incomplete marjoram with dense fibers is classified as Grade 2. The difference in grade is mainly due to the weight of the bird's nest, the size of the bird's nest, the thickness of the bird's wall and the thickness of the bird's horn. Therefore, the weight is the most intuitive way to differentiate between bird's nests of the same size. Generally, the price of top grade and first grade is around $90-100 per gram, while the price of special grade and second grade is around $80 per gram.
Classification: According to the nesting place of swiftlet: Cave Swiftlet, House Swiftlet; According to the color: Blood Swiftlet, Yellow Swiftlet, White Swiftlet; According to the shape: Marigold, Bird's Nest, Swiftlet Silk, Swiftlet Corner; According to the production form: Grass Swiftlet, Hairy Swiftlet.
4Completeness: Bird's nests are divided into flat marigolds (half-moon type or boat type) and triangular marigolds, which are related to the nesting position of the swallows. The original marigold maintains the original marigold shape, which is closest to the highest quality of raw material, with thicker bird's nest threads, and the soaking rate can be up to 7-10 times, followed by dense marigolds and sparse marigolds, so the original marigolds are more expensive, usually around 80 dollars. Bird's nest is generally broken, the integrity is damaged, the shape is not as beautiful as bird's nest, big and small strips are available. The price is lower than that of bird's nest, usually around 50 dollars per gram. Bird's nest is hard and has a general soaking rate. The price is relatively low, which can satisfy the demand of low-priced consumer groups. Broken Bird's Nest has a poorer taste than Bird's Nest and Bird's Nest, shorter stewing time, easy to be stewed and overcooked, and relatively low soaking rate. The price is relatively low, which can meet the demand of low-priced consumer groups.