AMERICAN PICNIC POTATO SALAD 4 pounds boiling potatoes, peeled 1/2 cup white wine vinegar 1/2 cup olive oil 1 teaspoon salt 1/4 teaspoon freshly ground black pepper 1 cup thinly sliced purple onions 1 cup celery strips, 1 inch long, ~ inch wide 3 medium-size cucumbers, peeled, seeded and sliced 2 cups Hellmann's mayonnaise, plus more if needed 5 tablespoons prepared Dijon-style or herb mustard (dill, tarragon or basil) 20 hard-cooked eggs, peeled and quartered 1 cup chopped Italian parsley 1. Drop the potatoes as you peel them into a kettle of cold, salted water. Bring to a boil and cook until tender but still firm. 2. When done, drain the potatoes and drop them into a mixing bowl; roughly slice them. Sprinkle the still-hot pota-toes with vinegar, olive oil, salt and pepper. 3. Add the onions, celery, cucumbers, mayonnaise and mustard; toss gently to combine. 4. Add quartered eggs and parsley and toss again. Cool to room temperature, cover, and refrigerate overnight. Before serv-ing, toss again, correct seasoning and add more mayonnaise if needed. 20 portions Silver Palate p.180