Celeriac
Celeriac,
Apium graveolens var
rapaceum (also known as 'turnip-rooted celery' or 'knob celery'), is a specially-adapted variety of
celery, which is grown for its large and well-developed
root rather than for the stem and
leaves. The root is used when it is about the size of a baseball or a medium-sized
potato. Celeriac may be used raw or fresh. It is best to peel celeriac before use, since the outer skin is tough, stringy. It has the celery flavor, so it is often used as a flavoring in soups and stews; it can also be mashed or used in casseroles and baked dishes.
Celeriac has good keeping properties, and should last 3 to 4 months if stored between 0ð and 5ðC and not allowed to dry out.