What You Need to Know
The emulsion forms when butter's milk proteins (casein and whey) interact with the reduced acidic liquid (wine/vinegar reduction). The acid helps stabilize the emulsion by partially denaturing proteins. Lecithin and other phospholipids in butter act as natural emulsifiers.
Provides a luxurious texture and bright acidity to balance rich dishes. Must be served immediately as it separates upon standing. The technique demonstrates precise temperature control and emulsification skills.
Key Parameters
Temperature
58°C
50°C - 65°C
Time
8-10 minutes
5 minutes - 15 minutes
Equipment
Steps
- 1.
Beurre Blanc Nantais (Loire Valley, France): Classic preparation with Muscadet wine, served with pike or other freshwater fish
- 2.
Beurre Blanc au Citron (Modern French): Lemon variation for seafood, where acidity cuts through richness