This analysis has an inconsistency regarding pie:

A slice of pumpkin pie is listed as toast (starch on one side), but a slice of double-crusted pie is a taco (three sides), a whole key lime pie is a quiche (five sides), and a whole double-crusted pie is a calzone (six sides).

In all cases save one, side crust is seen as distinct from bottom crust. A slice of pumpkin pie therefore has starch on two sides, making it a sandwich.