The Waiter Who Said "No"

Scene: Da Silvano's Restaurant, Greenwich VillageAction: The waiter sets down the plate of mozzarella, tomatoes and basil that we ordered.Mom: "Excuse me, but can we get some balsamic vinegar with that please?"Waiter: "No, madam. This mozzarella is too fresh---it would be a crime to hide that freshness with vinegar."Stunned silence.Me: "Mom, let's just eat it this way."Mom: "Ok, fine."Dad (after the waiter leaves): "I've never heard a waiter say 'no' before like that."SCENE.