Goodband compares these Knobbed Russets to shrunken heads. Others say potatoes or toads. They're all gnarled and warty and brown, but don't be intimidated: They taste great when ripe. They originated in Sussex, England, in 1819.
Technically, it's against the law for Russian restaurants to buy top-notch Italiano Parmigiano-Reggiano. But that's nothing a little creative labeling can't get around.