Rachel Ray called it, "You Won’t be Single for Long” Penne alla Vodka. Chic East Hampton restaurant Nick and Toni’s has had it on its menu for over 20 years, model Gigi Hadid's recipe became one of the most googled topics, and the legendary Ina Garten reintroduced it as Penne alla Vecchia Bettola, sparking immense popularity. What is it about vodka sauce that makes it one of the most sought after Italian-American pasta dishes of all time? Is it because it contains alcohol, or that it’s so…