3A Whole Dry Birdnest 3A燕盏 Edible bird’s nests, often called the “Caviar of the East,” are considered to have a high nutritional and medicinal value believed to have everything from anti-aging and anti-cancer properties to the ability to improve concentration and raise libido. Protein is the most abundant constituent of the nests, which contain all of the essential amino acids, the building blocks out of which proteins are made. They also contain sex hormones, including testosterone and estradiol. The nests also contain carbohydrates and a small number of lipids (naturally occurring molecules that include fats). Previous research has indicated that the nests contain substances that can stimulate cell division and growth, enhance tissue growth and regeneration.