Pomegranate juice takes just minutes to make once you've seeded the pomegranate. Place the drained seeds in a blender or food processor, and blend or process until combined into pulp. Transfer the pulp to a sieve set over a bowl. Using the back of a spoon, press the pulp to release the juice. Taste the juice. If ripe enough, it shouldn't require any sweetener. Use the juice as a beverage or as an ingredient in sauces, salad dressing, juice blends, or cocktails.