Celery powder is a dried, ground concentrate prepared from fresh celery that is used as a seasoning and as a food preservative in organic meat products. Several commercial preparations exist, and it can also be made using a food dehydrator. Some celery powders are prepared from celery juice.^[1]

Meat curative

Celery powder contains a significant amount of naturally occurring nitrate and is often treated with bacterial cultures to produce nitrite.^[1][2][3][4] In the United States, treated celery powder is sometimes used as a meat curing agent in organic meat products, which is allowed per USDA regulations because the nitrate/nitrite is naturally occurring.^[2] USDA regulations do not allow artificially added nitrate or nitrite to be used directly in organic food products.^[2] Meats cured with celery powder include hot dogs and bacon.^[5][6] Celery powder prepared from celery juice has been shown to have a nitrate content of approximately 2.75%.^[1]