What You Need to Know
Mechanical disruption of plant cell walls (particularly in galangal rhizomes and candlenuts) facilitates enzymatic reactions between released polyphenol oxidases and phenolic substrates. Stone-on-stone friction generates localized heat (40-50°C) that partially denatures protease inhibitors in shallots.
Creates deeper flavor integration than blade-chopping by preserving volatile oil droplets in a starch-stabilized emulsion from bruised aromatics.
Key Parameters
Temperature
30°C
26°C - 34°C
Time
12 minutes
5 minutes - 25 minutes
Equipment
Granite mortar (minimum 15kg)Teak pestle (45-50cm length)Banana leaf lining (pH 6.5-7.0)
Steps
- 1.
Rendang Minang (West Sumatra): Creates micro-encapsulated flavor pockets that release during 8-hour cooking
- 2.
Laksa Lemak (Kelantan): Pounded rempah forms colloidal suspension with coconut milk
The Science
Primary Reaction
Tribochemical reaction