What You Need to Know
The process involves soaking dried fish in lye (NaOH) solution (pH ~11-12), which saponifies fats and partially hydrolyzes proteins into amino acids. Subsequent soaking in water neutralizes the alkali (pH ~7) through reaction with atmospheric CO2 forming sodium carbonate. The term 'lutfisk' derives from Old Norse 'lut' (lye) and 'fisk' (fish).
Served with melted butter, bacon, pea stew, or mustard sauce in Norway/Sweden. The gelatinous texture divides opinion - described as 'custard-like' by enthusiasts but polarizing due to residual alkali notes. Traditionally prepared for winter festivals when fresh fish was unavailable.
Key Parameters
Temperature
°C - °C
Time
48h
36h (lye soak) - 72h (lye soak)
Equipment
Steps
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The Science
Primary Reaction
Alkaline hydrolysis of proteins/fats