Experts and doctors recommend various methods and recipes for making fresh celery juice more appealing. For instance, you can add an apple, carrot, or cucumber to the juice. Another option is to add some citrus to help with the bitterness. Of course, you can experiment with various veggies, fruits, herbs, and recipes until you get your desired taste. However, to get the most benefits from celery juice, it's best to consume it without extra ingredients.