To make homemade champagne vinegar, store leftover champagne in an open, widemouthed jar at room temperature. In a few weeks, it will be vinegar.
Ingredients
Makes 1 cup
2 teaspoons Dijon mustard
1/4 cup champagne vinegar
3/4 cup extra-virgin olive oil
1/2 teaspoon salt
Pinch of freshly ground black pepper
Directions
In a small bowl, combine mustard and vinegar; whisk together. While whisking constantly, slowly drizzle in olive oil. Season with salt and pepper. The vinaigrette may be stored in the refrigerator in an airtight container for up to 1 month.
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