In a food processor (preferred) or with a whisk, blend the garlic, Dijon, Worcestershire, lemon juice, mayo, and Parmesan to combine well. Season with salt and pepper to taste. Chop Romain into bite-size pieces, then toss with the desired amount of dressing. With a vegetable peeler, shave slices of Parmesan off the wedge of Parmesan over the top.