Pick out the one you fancy and serve it for your dinner.

One good-sized roll or a two-inch cube of corn bread, or three-fourths of a cup of boiled rice will sustain you just as well as a medium-sized potato.

A banana, baked or fried, makes an excellent substitute for a potato.

An apple is also a very palatable potato equivalent, if you want something more spicy than hominy or corn bread.

Why mourn over the lost potato?
But how about those mineral salts?
Well, the potato has no monopoly on those, either, though it is ordinarily a very valuable contributor.