Green Salad with Tangy Mustard Vinaigrette

In a medium jar, combine the vinegar, mustard, shallot and parsley; cover and shake until smooth. Add the olive oil, season with salt and pepper and shake the vinaigrette until blended.

In a large bowl, toss the greens, grapes, walnuts and cheese. Shake the vinaigrette again, pour it over the greens and toss. Serve right away.