Description
Technique for enhancing vegetable sweetness and texture through controlled sugar transformation.
Technical
À blanc uses sucrose inversion to create syrup (hydrolysis into glucose/fructose), while à brun employs caramelization (pyrolysis of sugars at 160°C+). Both methods create osmotic pressure that partially dehydrates cell walls.
Culinary Significance
Creates glossy, flavorful vegetable garnishes with balanced sweetness and structural integrity.
Science
Primary Reaction
Caramelization (à brun) / Sucrose inversion (à blanc)
Parameters
Temperature
160°C optimal
110°C to 175°C range
Time
7 minutes
3 minutes – 12 minutes
Equipment
Heavy-gauge sautoir (copper preferred)Wooden spatula (non-reactive)Infrared thermometer