What You Need to Know
Whey proteins (β-lactoglobulin, α-lactalbumin) stabilize air bubbles during whipping, while lactic acid (pH 4.0-4.5) provides tartness. Pasteurization (72°C/15sec) denatures proteins for better foam stability.
Adds bright acidity and creamy texture to dishes while reducing food waste from skyr/yogurt production.
Key Parameters
Temperature
12°C
4°C - 25°C
Time
5-7 minutes
2 minutes - 15 minutes
Equipment
Stand mixer with whiskISI whipper (optional)pH meter
Steps
- 1.
Whey foam with rye crumbs (Noma, Copenhagen): Provides ethereal contrast to dense breadcrumbs
- 2.
Fermented berry soup (Icelandic modern cuisine): Cuts sweetness with lactic tang
The Science
Primary Reaction
Protein denaturation + bubble stabilization