What You Need to Know
The Maillard reaction between reducing sugars and amino acids creates brown pigments and complex flavor compounds. Simultaneously, thermal breakdown of polysaccharides and proteins releases glutamates and nucleotides, enhancing umami. Heat also volatilizes aromatic terpenes, contributing to the characteristic mushroom aroma.
The Science
Primary Reaction
Maillard browning (reducing sugars + amino acids) and thermal degradation of polysaccharides/proteins