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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Stone‑ground cornmeal production uses a metate to mechanically reduce kernel size without significant heating, preserving native protein structure and preventing starch gelatinization.
Origin: Maya, Aztec, and other Indigenous peoples of Mesoamerica (Pre‑Columbian) — Mesoamerica
See full technique reference →The mechanical action creates micro‑fractures that increase surface area, facilitating enzymatic activity during subsequent nixtamalization. Localized friction can raise temperatures up to ~50 °C, but this is insufficient to trigger Maillard reactions or caramelization. The fine particle size (~200 µm) enhances mixing and dough properties in baking.
Primary Reaction
Mechanical fragmentation of corn kernels and starch granules
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