Apple-infused vodka has a light, fruity flavor you can enjoy on its own or mix it into your favorite cocktails. High-quality 80 or 100 proof vodka works best, although the strong flavor of 100 proof vodka can overpower a drink if it's not mixed with water or a sweetener. Use apples at their peak quality and avoid any with bruises or blemishes to ensure they provide sweetness, flavor and color to the infused alcohol.
Rinse the apples under cold, running water and cut out the cores. Slice the apples into 1/2-inch-thick slices or cubes.
Place the apples in the bottom of a clean jar. Use about 2 cups of chopped apples for every 2 cups of vodka, although you can use less if you prefer a lighter fruit flavor or more for a stronger flavor.
Pour the vodka over the apples so the fruit is completely submerged. The apples will spoil if they are exposed to air. Screw on the lid so the jar is tightly sealed.
Store the jar in a dark, room-temperature pantry for three to five days. Shake the jar daily so the juices and flavor of the apples can thoroughly mingle with the vodka.
Place a funnel in a glass bottle or jar, and line it with a layer of cheesecloth. Pour the vodka through the cheesecloth and into the new bottle, straining out the apple slices. Seal the bottle closed and store it in a dark pantry indefinitely.