Japanese professional culinary schools teach deep-frying (agemono) as a complete science — the precise relationship between oil temperature, batter composition, moisture content, and the specific physics of heat transfer in oil. Tsuji documents this extensively but the professional school texts go further, establishing the mechanisms behind why tempura batter must be cold, why minimal mixing produces better results, and why the temperature drop when ingredients are added must be compensated for immediately.
The Japanese professional science of deep-frying — documented from culinary school curriculum.
JAPANESE CULINARY TRADITION — DEEP EXTRACTION