The Real Brands Behind Costco's Kirkland Products

Kirkland Signature Aged Balsamic Vinegar comes all the way from Modena, Italy, the region traditionally associated with balsamic vinegar. It is manufactured by the Italian brand Acetum, one of the leading brands of balsamic vinegar. You're buying stellar quality for a total steal. You can get a liter of the vinegar in CostCo for $13.49, or 8.45 fl. oz. of Acetum balsamic vinegar for $4.50, which would cost $18 for a liter.

Kirkland Signature Aged Balsamic Vinegar, $13.49, Costco