Radio 4 in Four - What can you use instead of an avocado? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - What can you use instead of an avocado? - ÃÛÑ¿´«Ã½ Sounds
What can you use instead of an avocado?
If an avocado isn't available, what can you put on your toast?