Make a solution of roughly equal parts water and white vinegar. If in doubt, err on the side of too much water.If you have it, add a few drops of leather cleaner to the solution.
 Gently massage a thin layer of the mixture into the stain with a clean rag or towel. Let it sit for at least 10 minutes, up to an hour.
 Wet a clean rag, and gently blot away the vinegar solution with one corner. Then use another clean corner to do a second wipe, to ensure the mixture has been completely removed. Pat it dry with a clean paper towel. Let it dry for at least 24 hours.
 Use a soft cloth to rub a small amount of leather conditioner into the affected area. This will help restore the leather’s texture. Let it dry again.
Dilute the vinegar.
Apply the solution.
Clean it off.
Condition the leather.
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