The same chemical reaction that sears a steak and scents a bakery also helped preserve Iron Age bog bodies. This deep dive explains the Maillard reaction, a form of non-enzymatic browning in which amino acids react with reducing sugars to create flavor compounds and brown melanoidins.

We cover why it accelerates between 140 and 165 degrees Celsius, how a lye dip supercharges pretzels, and how Louis-Camille Maillard discovered it in 1912 while studying biology, not food. Then we follow John Hodge’s 1953 map of the chemical cascade, the acrylamide risk in fried potatoes, damaged livestock silage, and how time can replace heat.

• How the Maillard reaction differs from caramelization and why table sugar is not a reducing sugar
• Why alkaline conditions increase the reactivity of amino groups in pretzel dough
• The Amadori rearrangement, Strecker degradation, and how flavorists reverse engineer meat flavors
• Acrylamide from asparagine and mitigation with the enzyme asparaginase
• Black garlic, aging champagne, bog bodies, and preserved paleofeces