to add the oil) in a pan on a medium heat and add the crushed garlic.
after a minute or so add the frozen peas and stir thoroughly.
after about 3 minutes, the peas should begin to soften slightly. at this point add the spinach and stir continuously until it has shrunk down.
then add the water and mix everything together, leaving to simmer for a few minutes. pour the contents of the pan into a blender and blend until smooth. then add the avocados and blend again.
place the soup back into the pan and heat through until it is just about to boil. place it into bowls and serve with lemon. 