Vinegar is h2o and Acetic Acid. The primary Aspect inside the Acetic Acid is The Acetyl Molecule. Acetobacter can be the bacteria that converts alcohol into Acetic Acid (Vinegar) and it is ubiquitous. Just depart a wide open bottle of wine available for 2 weeks and Acetobacter will see it rapidly and convert it into wine vinegar. Acetobacter will