Combine the berries and water in a blender and puree until well-blended.
Pour the liquid into a container and refrigerate overnight.
The next day, strain the juice through cheesecloth or a fine sieve. Using gloves, squeeze the excess out with your hands.
The fruit scrap can be used to make homemade vinegar, or dried and powdered for adding to smoothies. It also makes a nice addition to cooked applesauce.
Store the juice in the fridge, it will last for a few weeks.
Video
Notes
Adjusting the Flavor This is a basic template that will yield a mild "juice". You can make it stronger by adding up to another 8 oz of berries. If you want to make jam or jelly you can cook it to bring out the astringency to help balance the sugar. Aronia Agua Fresca Mix the fruit juice with an equal amount of water or another fruit juice you like. Add lime juice, a pinch of salt and maple syrup or another sweetener to taste until you like the flavor. Soft herbs like mint, lemongrass or basil are nice bruised and allowed to infuse overnight.