Celeriac is a large, knobby white bulb with skinny celery stalks attached to the top. It’s also known as celery root and is a type of celery grown as a root vegetable for its large bulb instead of its leaves. It has a starchy consistency (but is not a starch) with a celery/parsley flavor. The hairy outer layer should be peeled. Inside you will find creamy, ivory flesh. It is wonderful raw, shredded together with other roots (especially carrots), roasted, mashed, pureed, and made into soups.