earthapple

noun

Plural:   earthapples
Alternative:   earth-apple  /  pl·  earth-apples

Potato.

Examples:

Secrets of Mastery:  ...(ii) pre-tasting each potato fresh before spending it in food-making (not to be feared or loathed; uncooked potatoes have a pleasant flavour, and repasts featuring intentionally hard-boiled, flash-singed, near-underdone, or plainly unprocessed juicy earthapples aren't a rarity);...  (Source: J∙ Okram - Bartonian Potato Pancakes  ●  Cooking Recipe.)