What does celeriac look like?

Celeriac, also known as celery root, is a knobby, bulbous root vegetable with a rough, brownish skin. Its flesh is pale and resembles that of a turnip or parsnip. The plant also features leafy green tops that resemble traditional celery leaves, but the edible part is primarily the root. Celeriac has a unique, earthy flavor that is often used in soups, salads, and purees.