Well, according to this Wikipedia entry, it's a lunch meat made from "coarse-ground lean pork and beef mixed and or coated with spices, formed into a loaf shape and then smoked over a hardwood fire."
Apparently it's not really consumed in the land of windmills, wooden shoes and leaky dikes; it's really more of a Pennsylvania Dutch thing.
Although my brother Ken was fond of Dutch Loaf, I wasn't a fan of the stuff as a kid. I'm sure I reached instead for the salami or baloney (or bologna if you prefer) to put between my slices of DeLuca Bakery white bread.
But now as I approach curmudgeon-hood, Dutch Loaf actually sounds pretty good. After all, meat shaped into a loaf is one of my favorite meals.
Alas, I'm a few decades late if I want to wash it down with an Old Dutch though.