The most popular holiday dish in Pennsylvania is being revealed. Google Trends uses search data in each state to determine the most popular holiday food in each state. In Pennsylvania, shoofly pie and roast pork, tops the list this year. Shoofly pie is a yummy combination of molasses, brown sugar and spices which was created in Philadelphia in the 18-hundreds. In other states, foods like crab legs were the most popular in Alaska, prime rib took the top spot in Idaho, and Gumbo was the favorite in Louisiana.