1, black truffle, also known as Polyporus, is expensive. The production of black truffles is very rare, and there will be a small amount of production in Sichuan and Yunnan in China, and the price of one kilogram is between 2000 and 3500 dollars.
2, bird's nest, bird's nest is mainly the best food that grows on cliffs. China has been regarded as a nourishing food since ancient times, and only the rich can afford it. The price of one kilogram is100000. The best bird's nest sells 10. 1 10,000 Jin. Bird's nest is a valuable tonic, because the quality is different and the market price is not uniform, ranging from one gram 18-30 yuan to one catty 10000 yuan. It is suggested to increase the intake of vitamins and protein during pregnancy to improve the body's resistance. Bird's nest is also very common in life, but the price is different according to different colors. Blood swallow, that is, red bird's nest, is the most expensive.