1 head cauliflower
3/4 c. shredded Cheddar cheese
1/2 c. mayonnaise
2 tsp. prepared mustard
A couple of drops of vinegar

Cook cauliflower head in boiling, salted water for 10 minutes. Mix mayonnaise, vinegar, mustard, and 1/2 cup of cheese. Place drained cauliflower head in buttered baking dish. Spread mayonnaise mixture over cauliflower. Top with remaining cheese. Bake 10 minutes in 350 degree oven.