Ingredients: Pineapple Vinegar. Produced through traditional natural fermentation. After opening, sediment, discoloration, and a transparent layer called "mother" may form on the surface of the vinegar as long as it is exposed to air. These are not signs of spoilage and the vinegar can be strained and used again. This indicates that fermentation is continuing and that the vinegar has not been pasteurized or filtered. It contains no chemical additives, preservatives, or dyes. Store in a cool place with the lid closed and protect from sunlight. Naturally fermented vinegar is a product with an indefinite shelf life. The batch number is the production date.