Cauliflower-Broccoli Medley
["1 head cauliflower", "1 bunch broccoli", "1 large red onion, slice and separate rings", "1/2 c. mayonnaise", "1/3 c. vegetable oil", "1/3 c. vinegar", "1/4 to 1/2 c. sugar", "salt and pepper"]
["Combine vegetables.", "Mix remaining ingredients.", "Add to vegetables; toss gently.", "Chill several hours or overnight."]
["cauliflower", "broccoli", "red onion", "mayonnaise", "vegetable oil", "vinegar", "sugar", "salt"]