Buttermilk dressing

The first time I ate pizza with my New York friends, I learned that Texans have a special relationship with buttermilk dressing. When the pizza arrived, I pulled a jar out of the refrigerator, grabbed a slice of pizza and drizzled some of the creamy, tangy dressing all over it.“What are you doing?” said my friends.“You don’t put buttermilk dressing on your pizza?” I said.“No! That's disgusting!”