What You Need to Know
During smoking, walnut shells pyrolyze at 300‑400 °C producing phenolic compounds guaiacol and syringol that diffuse into the duck meat. These compounds bind to proteins and fats, creating a characteristic smoky flavor while also acting as natural antioxidants. The curing step at 24‑48 h in salt/brine ensures microbial safety and enhances smoke penetration.
The Science
Primary Reaction
Pyrolysis of walnut shells producing guaiacol and syringol