Fill a glass jar 3/4 of the way full with apple scraps- use peels, cores and pieces from organic apples. See Note 1 Below
Fill jar to the top with filtered water- leave a couple inches of headspace. See Note 2 Below.
Add sugar and stir- Give it a good stir to evenly distribute the sugar throughout the jar. Try to make sure the apples are fully submerged to prevent molding.
Cover with a breathable cloth and secure with a rubber band. Let it sit for 4-6 weeks out of direct sunlight in a cool dark place- A flour sack towel, tea towel, or cut up old cotton t-shirt are all great options. See Note 3 Below.
Stir everyday for the first 2-4 weeks- this will prevent any mold from forming on apples that may not be completely submerged. See Note 4 Below.
Strain out apples after 4-6 weeks- Strain out the apples using a mesh strainer. Then, run it through again with cheesecloth lining the strainer.
Add a splash of apple cider vinegar- This will help jump-start the process of turning your liquid into a vinegar. Use a splash of apple cider vinegar from a previous batch you have made or from a good store bought apple cider vinegar that contains the "mother".
Re-cover glass jar with a breathable cloth and secure with a rubber band. Let sit for 2-4 months in a cool dark place- You can check on your vinegar after a few months and give it a taste. The longer you wait, the stronger vinegar taste you will get. See Note 5 Below.
Secure lid on jar and move to cold storage- Once you are happy with the taste of your vinegar, you can cap it with a non metallic lid and store it in your refrigerator.