Take parent's jalopy and phone, when leaving hospital with creamy substance (10)
I believe the answer is:
mascarpone
'creamy substance' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'take parent's jalopy and phone when leaving hospital' is the wordplay.
'take parent' becomes 'mas' (I can't explain this - if you can you should believe this answer much more).
'jalopy' becomes 'car' (I've seen this in another clue).
'and' means one lot of letters go next to another.
'when leaving' is a deletion indicator.
'hospital' becomes 'H' (abbreviation for hospital on maps).
'phone' with 'h' taken out is 'pone'.
'mas'+'car'+'pone'='MASCARPONE'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for mascarpone that I've seen before include "Italian cream cheese" , "Soft Italian cheese" .)