Broccoli-Cauliflower Salad
["1 head broccoli", "1 head cauliflower", "1 medium onion, chopped fine", "1 c. mayonnaise", "1/2 c. buttermilk", "1/2 c. sugar"]
["Mix last 3 ingredients.", "Pour over vegetables and let stand in refrigerator overnight.", "Salt can be added to taste."]
["broccoli", "cauliflower", "onion", "mayonnaise", "buttermilk", "sugar"]