- Name: ARO Mustard 1 kg - Brand: ARO - Unit Amount: 1 unit(s) Ingredients: Distilled vinegar 21.50% iodized salt 4% mustard seeds 2% turmeric powder 1% thickener (INS 1442) Allergy Information: contains mustard. How to Preserve: Store in a cool, dry place. Keep in a tightly closed container once opened.