What unit is the bird's nest you bought in the market? What is the price? What does it look like after stewing? Is the nutritional value in the soup or in the nest?
Take grams as the unit, the quality of bird's nest 40 yuan is about one gram. After stewing, it is as crystal clear as jelly, with toughness and faint protein fragrance. I always bought it from Shangguanyan Taobao Mall. I recommend it to you. Don't buy it in the outside market.