Some ripe avocado that could be eaten mushy (3)
I believe the answer is:
pea
'be eaten mushy' is the definition.
I can't judge whether this defines the answer.
'some ripe avocado that' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'PEA' is hidden within 'ripe avocado that'.
'could' is the link.
Can you help me to learn more?
(Other definitions for pea that I've seen before include "Ape this plant awkwardly" , "Leguminous plant" , "Seed eaten as vegetable" , "Small vegetable" , "Legume" .)