A fingerling potato is a small, stubby, finger

Finger

A finger is a limb of the human body and a type of digit, an organ of manipulation and sensation found in the hands of humans and other primates....

-shaped type of potato

Potato

The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family . The word potato may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species...

 which may be any heritage

Food heritage

Food heritage is a term that encompasses the origins of plants and animals and their dispersal, the sites where people first cultivated plants and domesticated animals, as well as the earliest locations around the world where people first processed, prepared, sold and ate foods...

 potato cultivars. Fingerlings are varieties that naturally grow small and narrow. They are fully mature when harvested and are not to be confused with new potatoes. Popular fingerling potatoes include the yellow-skinned Russian Banana, the orange-skinned French, and the Purple Peruvian. Due to their size and greater expense compared to other potatoes, fingerlings are commonly either halved and roasted as a side dish or used in salads.