Winter Salad

Ingredients

• 4 large Bermuda or Spanish onions, sliced
• 2 cups milk
• 2 cups water
• 4 hard-cooked eggs, chopped
• 2 teaspoons Dijon mustard
• Salt and freshly ground black pepper to taste
• 1 teaspoon sugar
• 1/2 cup olive oil
• 1/4 cup cider vinegar
• 2 small bunches celery, diced
• 4 large beets, cooked, peeled and thinly sliced