Ingredients
2 tablespoons red-wine vinegar
1 tablespoon Dijon mustard
2 tablespoons olive oil
Coarse salt and ground pepper
1 1/2 pounds (4 heads) Boston lettuce, torn into pieces
1 cup shaved (2 ounces) Parmesan cheese
Preparation
In a small bowl or jar, whisk or shake vinegar, mustard, and oil until combined and thickened; season with salt and pepper. (Dressing can be made ahead and refrigerated, covered, until ready to serve.)
In a large bowl, combine lettuce with dressing and 3/4 cup cheese; toss gently to coat. Divide among plates, and top with remaining 1/4 cup cheese. Serve immediately.
