Collect apple scraps, ensuring they are clean and free from mold or rot.
Find a clean, glass jar with a wide mouth. The size of the jar will depend on the amount of apple scraps you have.
Fill the jar halfway with apple scraps.
Dissolve one to two tablespoons of sugar in a cup of water. Pour this mixture into the jar and continue mixing and pouring until the apple scraps are fully submerged.
Place a clean cloth or coffee filter over the jar's mouth and secure it with a rubber band or string. This will allow the mixture to breathe while keeping out debris.
Store the jar in a dark, warm place (around 60-80°F or 15-27°C) for about 3-4 weeks. Stir the mixture every few days.
After the fermentation period, use a fine mesh sieve or a few layers of cheesecloth to strain the liquid into a clean bottle or jar. Seal it with a lid and store it in a cool, dark place.
Allow your homemade apple cider vinegar to age for a few more weeks or even months for a richer flavor.