Combine the vinegar with the mustard and garlic in a small bowl and whisk in the olive oil. Season with salt and pepper to taste.
Just before serving, toss the romaine, mâche, oak leaf lettuce, mizuna or spinach, celery leaves, and herbs in a large bowl with just enough of the vinaigrette to lightly coat them (you may not need all of the vinaigrette). Season with salt and pepper to taste and serve.
nutrition information (per serving):
based on eight servings;
Photo: Scott Phillips