01 - Rinse the cranberries and pomegranate seeds thoroughly.
02 - In a blender, combine cranberries, pomegranate seeds, apple if using, and water. Blend on high speed until smooth.
03 - Place a fine-mesh sieve or cheesecloth over a large bowl or pitcher. Pour the blended mixture through and press with a spoon to extract the juice. Discard or reserve pulp for smoothies.
04 - Taste the juice and add sweetener if desired, stirring to combine.
05 - Chill the juice in the refrigerator or serve over ice. Garnish with pomegranate seeds or mint leaves if preferred.