Turnip, Leek & Potato Soup

• 6 T Butter
• 4 Medium Onions
• leeks
• 3 pounds Turnips, peeled
• 1 1/2 pounds potatoes
• 2 tsp Salt
• 6 cups Broth
• 1/4 tsp nutmeg

Cook onions and leeks in butter about 5 minutes. Add turnips and potatoes and salt - cover - cook on low heat about 20 minutes. Add broth - cover partially - cook 10 minutes. Puree. Season with salt and nutmeg.