Celery seeds are found in the small white flowers of the celery plant. Use celery seeds in dishes that benefit from it's warm, bitter, celery-like flavour - meatloaf, soups and mayonnaise dressings. They have been used in medicine for thousands of years in the Eastern world. Today the seeds are mostly used as a diuretic, it helps the body eliminate water. It's also known to be used for treating arthritis, gout and reducing inflammation.