Wash all fruits and vegetables thoroughly. Roughly chop the spinach, kale, cucumber, apple, celery and other optional ingredients.
Add all ingredients to a high-speed blender.
Pour in water, coconut water, or almond milk to help the blending process. Start with 1/2 cup and add more as needed to reach your desired consistency.
Blend on high speed until smooth. This may take a minute or two, depending on your blender.
If you prefer a smoother juice, strain the mixture through a nut milk bag or fine-mesh sieve (optional).
Pour the juice into a glass and enjoy immediately. You can also store it in the refrigerator for up to 24 hours.
