Cantharellus formosus is a choice edible mushroom species in the family Cantharellaceae, commonly known as the Pacific golden chanterelle. It is native to the Pacific Northwest region of North America, where it serves as a cornerstone of the regional foraging economy and forest ecology. The genus name Cantharellus is a diminutive of the Greek kantharos, meaning "goblet," while the species epithet formosus is Latin for "beautiful" or "finely formed." For decades, this species was conflated with its European relative, Cantharellus cibarius, until molecular phylogenetics in the late 20th century identified it as a distinct species and the official state mushroom of Oregon.

The fungus is an ectomycorrhizal species that forms vital symbiotic bonds with the roots of Western Hemlock and Douglas Fir trees. It is characterized by its funnel-shaped cap, which ranges from bright yellow to a duller ochre, and the presence of "false gills"—blunt, wavy ridges that are decurrent, meaning they run down the length of the relatively thick, fleshy stem. The Pacific golden chanterelle is typically larger and more orange-tinted than its European counterpart. Because it requires a complex relationship with living host trees and specific soil microbiomes, it has never been successfully cultivated at a commercial scale, making it a seasonal wild-harvested luxury.

As a food source, Cantharellus formosus is prized for its dense, meaty texture and its unique aroma, which is famously likened to fresh apricots or peaches. Historically used by Indigenous peoples of the Pacific Northwest and later popularized by European settlers, it is now a staple of "Pacific Northwest" or "Cascadian" cuisine. The mushroom is typically sautéed in butter or oil to preserve its delicate aromatics, added to wild game stews, or used in cream-based sauces. Its ability to hold its shape during cooking makes it a favorite for both home cooks and professional chefs.

Nutritionally, Cantharellus formosus is a rich source of Vitamin D (ergocalciferol), iron, and dietary fiber. It contains significant bioactive compounds, including various carotenoids—primarily beta-carotene—which contribute to its pigmentation and provide antioxidant benefits. It also contains ergosterol, a precursor to Vitamin D2, and specific fungal polysaccharides that are studied for their potential to enhance immune response. Like other chanterelles, it contains small amounts of the sugar alcohol mannitol; while generally safe, it may cause mild digestive sensitivity in some individuals when consumed in large quantities.