What You Need to Know
Vinegar's acetic acid (pH 2.4-3.4) denatures hemoglobin and plasma proteins, while controlled heat (60-80°C) prevents rubbery texture through gradual aggregation rather than tight coagulation.
The technique transforms blood from waste product to luxurious thickener, providing umami depth and nutritional iron in a form more bioavailable than plant sources.
Key Parameters
Temperature
72°C
60°C - 85°C
Time
2.5 hours
1.5 hours - 4 hours
Equipment
Copper whisk (prevents scorching)Non-reactive enameled potBlood strainer (0.8mm mesh)
Steps
- 1.
Mårtensgås supper (Scania, Sweden): Centerpiece balancing rich goose meat with iron-rich broth
The Science
Primary Reaction
Acid denaturation of globin proteins