Out in quiet forest regions of Europe, Asia, and North America, a rough-looking fungus clings to tree trunks. Its name? "Amaropostia stiptica" , more commonly called the "bitter bracket". While it doesn’t pose a toxic threat, its taste tells another story. Researchers now say this fungus might hold the title for the most bitter natural substance ever found. A Fungus That’s Hard to Miss—Once You Taste It Although it blends into bark and often goes unnoticed, the bitter bracket recently caught the attention of scientists...