Whole Celery Seed is the dried fruit of a plant in the parsley family. Celery Seed tastes similar to table celery, and has a warm, slightly bitter, aromatic flavor. Celery seed is often used in pickling recipes. Celery seed is also used to treat some health conditions like anxiety, high cholesterol, hypertension, colds, and flu. This is about 4 1/2 oz, which is a little more than 1 full cup of spice.