Triterpenes

Triterpenes are a large family of natural compounds built from six linked units of a small molecule called isoprene, giving them a 30-carbon backbone. They occur widely in plants, and in fungi they are especially associated with woody species such as reishi and chaga. In many cases they are responsible for a mushroom's bitter flavor.

Where triterpenes show up

• Reishi: contains dozens of related triterpenes known as ganoderic acids, a major reason reishi tea tastes so bitter.
• Chaga: contains inotodiol and draws betulin and betulinic acid from the birch trees it grows on.
• Plants: triterpenes and their relatives are found in olives, apple peels, licorice root, ginseng and many herbs.

Why they matter for extraction

Triterpenes dissolve poorly in water but much better in alcohol. That is why a water-only hot-water extraction captures mainly polysaccharides like beta-glucans, while an alcohol step is added in dual extraction to capture triterpenes as well. When you see "dual extracted" on a reishi or chaga product, this is usually the reason.

Research and tradition

Mushroom triterpenes have been the subject of laboratory research for decades, particularly in Japan, China and Korea. Traditional practice, meanwhile, used them the old-fashioned way, in long-simmered teas and alcohol-based tinctures. Research is ongoing, and findings differ by species and preparation.

Bitterness and flavor pairing

From a taste point of view, triterpenes are why some mushrooms need a skilled hand in recipes. Bitterness can be pleasant when balanced, as anyone who enjoys coffee or dark chocolate knows. Roasted cocoa and caramel notes soften sharp edges and make earthy flavors feel rounded. That balance is at the heart of how Polkadot pairs a functional mushroom blend with chocolate. Taste the idea in the Polkadot Dark Chocolate bar or the Polkadot Samoas Chocolate Bar, inspired by the classic caramel-coconut cookie flavor.