1 C. white wine vinegar

2 medium shallots, peeled and minced

2 stalks lemongrass, thinly sliced

1 C. unsalted butter, cut into tablespoons

Salt and white pepper to taste

1/4 C. rice wine vinegar

1 C. white wine

3 T. heavy cream

 

Combine both vinegars, wine, shallots and lemongrass in a medium saucepan and reduce over a medium high heat until the liquid is almost gone. Add cream, return to boil, then reduce heat to low and begin whisking in butter, a few T. at a time, until all are incorporated and sauce is homogenous. Taste for acidity, add salt and pepper to taste. The sauce should taste slightly acidic, forming a pleasant balance with the richness of the butter and yet not be too tart. Reserve warm until ready for service.