In a large pot, combine the apples, water, and apple cider vinegar. Boil for 20 minutes or until the apples are very soft and mushy.
Once the apples are soft, remove them from the heat. Grab a large bowl, a fine mesh sieve, and a large metal spoon. Pass the apples through the sieve into the bowl. Discard any leftover apple peels and seeds. The mixture will look like applesauce.
Place the apple puree back into the pot, add sugar, then cook for 1-2 hours. Stir frequently. The mix will darken and thicken up into a jam. Remove from heat and keep at room temperature until ready to serve.
