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Why is Reishi Bitter, but Reishi Spore Powder Not?

15 Aug 2025

There is a common discussion about the taste of Reishi spore powder. Some claim authentic spore powder is bitter, while others insist it is not. To clarify the situation, GANOHERB offers some insights based on the nature of the product.

Why is Reishi Bitter, but Reishi Spore Powder Not?

First, it's helpful to understand that not all components contributing to Reishi's profile are bitter. The Reishi mushroom contains a diverse array of natural compounds, including many types of triterpenes. While some specific triterpenes have a bitter taste, many others do not.

Second, the composition of Reishi spores is different from that of the Reishi fruiting body (the visible mushroom). The fruiting body is primarily composed of fungal fibers (mycelium), which contain a concentration of these bitter compounds. In contrast, Reishi spores themselves have a different structural and chemical makeup; they are not composed of the same intensely bitter fibers. Therefore, pure Reishi spore powder tastes distinctly different from the fruiting body and lacks its pronounced bitterness.

An expert with nearly 20 years of experience in Reishi research explains: "Under a microscope, you can see that Reishi spores have a thick cell wall. Pure, broken-wall spore powder has a soft texture and is almost non-bitter upon consumption, accompanied instead by a distinctive aroma characteristic of edible mushrooms."

Why is Reishi Bitter, but Reishi Spore Powder Not?

Official processing specifications from various regions describe pure spore powder as having a "mild aroma and subtle taste." If a spore powder is very bitter, it may not meet these descriptive standards and could potentially contain other materials. With current technology, producing intensely bitter broken-wall spore powder from pure spores is not typical.

How to Examine Spore Powder

If you have access to a microscope, you can observe the physical state of the spores, such as whether the spore walls are broken and to what extent.

"It's important for sellers to accurately label their products, allowing consumers to make informed choices based on the product's actual contents," the expert states. When considering broken-wall Reishi spore powder, factors like the breakage rate, Reishi strain, and origin can be part of the evaluation.

Originating from the Wuyi region, GANOHERB Broken-wall Reishi Spore Powder Capsules are a well-received product. This is due to their source from organic Reishi cultivation bases and a high spore breakage rate. The product is formulated without additives and is valued for its purity and consistency.


How to Evaluate Spore Powder

Smell the aroma: Fresh spore powder typically has a noticeable, fresh fragrance. Powder that is old or compromised may have an off-odor.

Observe the color: The color is typically a deep, brownish tan. Significant deviations in color may indicate issues.

Taste the powder: It should not feel gritty and is typically not bitter. Significant bitterness may suggest the presence of other materials.

Test the texture: It should feel fine and smooth. Broken-wall spore powder, due to its inherent oil content, may form small clumps that crumble easily.

Test with water: High-quality, well-broken spore powder will often disperse in hot water and settle slowly, while unbroken or poorly broken powder may settle much faster.

This article is for informational and educational purposes only. It discusses the sensory characteristics and physical properties of Reishi spore powder and does not make any health claims. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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