一瓶白桦树汁，半瓶智商税？

Core Viewpoint - The article discusses the rising popularity and pricing of birch sap, highlighting its marketing as a health drink with exaggerated benefits, while also critiquing the consumer behavior surrounding it [5][14][21]. Group 1: Product Overview - Birch sap is marketed as a premium health drink, often priced significantly higher than other beverages, with claims of being a "plant gold" and a "liquid cordyceps" [5][7]. - The harvesting process is heavily emphasized, with claims that it can only be collected every three years and only from specific trees, which adds to its allure [7][14]. Group 2: Consumer Behavior - Consumers, particularly middle-aged men, are drawn to birch sap for its perceived health benefits and the experience of drinking it, likening it to a connection with nature [21][22]. - The article suggests that the appeal of birch sap is more about the ritual and experience rather than its actual nutritional value, which is often overstated [16][19]. Group 3: Market Dynamics - The birch sap market is characterized by high sales volumes on e-commerce platforms, indicating strong consumer demand despite the questionable health claims [14]. - There is a critique of the authenticity of the product, with some sellers allegedly using tree bark and sugar to create a similar product, raising concerns about quality and transparency [18][19].