1 head cauliflower, broken into sm. pieces
1 stalk broccoli, broken into sm. pieces
Several stalks celery, chopped
1 pkg. frozen green peas, thawed, not cooked
2 c. mayonnaise
1/4 c. sugar
1/4 c. Parmesan cheese
2 tbsp. vinegar
1/2 tsp. salt

Combine all ingredients and refrigerate overnight. Stir before serving.