Just using BB's favorite food---P I E
, one can almost draw a map with Pie Specialties matching State or Regional borders.
Huckleberry seems to focus on Idaho, while MarionBerry is an Oregon favorite. The Chess or Sugar-creme pies seem to be readily available in the Mid-Atlantic/MidWest where There are (or have been) Amish or Mennonite population centers.
Today when one thinks of Banana Cream Pie or Pudding, we tend to look to the South...Same for Sweet Potato Pie...but change only the main ingredient (sweet potato) to Squash or Pumpkin and we return to the New England origins.
The Fried Pies of OK and Arkansas are another regional offshoot...more a question of 'style' rather than 'flavor'.
Molasses as a flavoring in Pie seems more common in the NE region. I love Indian Pudding..the Cornmeal/molasses"Pilgrim' food. We make a Squash pie (minus the crust) recipe that comes close to the old-cornmeal in both flavor and consistency.
It is kinda fun to smple the different versions of a simple item like PIE and trace it's roots to the geographic area of it's creation.
One doesn't see much fresh BOYSENBERRY Pie outside of SoCal. Although the Berry farms are disappearing rapidly...so the sources may migrate to Oregon faster than our tracing can follow them.