Description
Hydrodiffusion of volatile compounds from Thai aromatics creates the foundational flavor profile of Tom Yum soup.
Technical
Thermolabile compounds like citral (lemongrass), pinene (kaffir lime), and galangin (galangal) undergo steam distillation in aqueous medium. The process extracts both hydrophilic (flavonoid glycosides) and hydrophobic (essential oils) components.
Culinary Significance
Forms the aromatic base for Thailand's iconic hot-and-sour soup, with the infusion technique preserving delicate top notes while developing deeper umami undertones.
Science
Primary Reaction
Hydrodiffusion of volatile compounds
Parameters
Temperature
92°C optimal
82°C to 98°C range
Time
18 minutes
12 minutes – 25 minutes
Equipment
Tall narrow pot (reduces volatile loss)Mortar-crushed aromatics (increases yield)Muslin sachet (optional for clean broth)