2 Tbls. balsamic vinegar
2 Tbls. white-wine vinegar
2 tsp. dijon mustard
1 shallot, minced
Sea salt and freshly ground black pepper
2/3 c good olive oil

In a bowl whisk together vinegars, mustard, shallot, and salt and pepper to taste. Add oil in a stream, whisking, and whisk vinaigrette until emulsified.

Makes about 1 cup.