Liquid Preservative flavor is a food preservative that is used to extend the shelf life of food products such as bakery items, meats, and dairy products. It is a clear, colorless, and odorless liquid that is added to food products to inhibit bacterial growth. It is typically a combination of propylene glycol, water, and a preservative agent such as sodium benzoate. The preservative helps to protect food from spoilage, discoloration, and rancidity. It does not alter the flavor or color of the food.