This may be hard to believe, but once upon a time there was a dude ranch named Hidden Valley in California, and that?s where ranch dressing (made with sour cream, buttermilk, mayo, green onions, and garlic powder) was invented in 1954. It reached its apogee of fame three decades later, achieving mass notoriety as a flavoring for Doritos. Ranch dressing and its multiple variants are now, according to Wikipedia, the second-most popular salad toppings next to Italian dressing. At Wimpy?s III in Washington Heights, you can get it on your grilled-chicken wrap, and bottles of it still line supermarket shelves.