Parsnips have a long taproot that can grow up to a foot long and three inches across at the crown. The foliage of the plant, which grows above ground, resembles large celery leaves and stems. The flesh of a parsnip is always a creamy white color. A sweet aniseed flavor pervades the carrot. During frosty weather, the flavor of the parsnip will become more intense. The parsnip is an adaptable winter vegetable that is frequently used in hotpots, stews, and soups. Parsnips are a type of long, white root vegetable that is related to carrots, parsley, cumin, and dill.