If you want to single serve in your blender, you need to first determine the size of the serving that you want. Once you know the size of the serving, you can add the appropriate amount of ingredients into the blender. For example, if you want a small serving, you would add 1/2 cup of liquid and 1/4 cup of dry ingredients. If you want a medium serving, you would add 1 cup of liquid and 1/2 cup of dry ingredients. Finally, if you want a large serving, you would add 2 cups of liquid and 1 cup of dry ingredients. After adding the ingredients into the blender, simply blend until smooth and enjoy!