Fruit badly stored in Moorish city (10)
I believe the answer is:
granadilla
'fruit' is the definition.
(granadilla is a kind of fruit)
'badly stored in moorish city' is the wordplay.
'badly' becomes 'i'll' (eg in ill-advised).
'stored in' is an insertion indicator.
'moorish city' becomes 'granada' (I've seen this before. I am not sure about the 'moorish' bit.).
'ill' inserted inside 'granada' is 'GRANADILLA'.
Can you help me to learn more?
(Other definitions for granadilla that I've seen before include "Passion fruit" , "Flowering plant" .)