Human: How do I best prepare a green smoothie? Assistant: 
To prepare a delicious green smoothie, start by gathering the ingredients you will need. You will need fresh or frozen fruits and vegetables such as spinach, kale, avocado, banana, and apple. You will also need liquid such as water, coconut water, or almond milk. Add the liquid ingredients to a blender first and then add the fruits and vegetables. Blend everything together until it is smooth and serve. Enjoy!