2 tablespoons rice wine vinegar or white wine vinegar
⅓ cup extra-virgin olive oil
Salt and freshly ground black pepper
Directions
In a medium bowl, whisk the mustard, shallot, and vinegar together.
Very slowly drizzle in the olive oil while whisking constantly until emulsified. Season to taste with salt and pepper.
Alternatively, place the mustard, shallot, vinegar, and olive oil in a jar and vigorously shake for 30 seconds to 1 minute until combined. Season to taste with salt and pepper.