Sweet man ensnared by escort, despondent (11)
I believe the answer is:
marshmallow
'sweet' is the definition.
(marshmallow is a kind of sweet)
'man ensnared by escort despondent' is the wordplay.
'man' becomes 'm'.
'ensnared by' becomes 'marshal' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'escort' indicates putting letters inside (one word carries or escorts another).
'despondent' becomes 'low' (I've seen this in another clue).
'm' placed into 'marshal' is 'marshmal'.
'marshmal'+'low'='MARSHMALLOW'
Can you help me to learn more?
(Other definitions for marshmallow that I've seen before include "Spongy jellylike sweet" , "Spongy confection - pink-flowering plant" , "Sweet, often toasted" , "Sweet - pink-flowering plant" , "Soft sweet" .)