How to identify it?
Cap
Cap 4-15 cm across, convex at first and later flattened; greenish to bright brown (they vary considerably in color); surface dry or slightly wet. Flesh thick, firm, white. Taste sweet, reminiscent of hazelnuts.

Scientific Classification

Phylum
Club fungi Class
Mushroom-forming fungi Order
Russulales Family
Russulaceae Genus
Russulas Species
Charcoal burner