Double serving of sticky stuff with English sauce (7)
I believe the answer is:
tartare
'sauce' is the definition.
(I've seen this before)
'double serving of sticky stuff with english' is the wordplay.
'double serving of' becomes 'tar' (I am not sure about this - if you are sure you should believe this answer much more).
'sticky stuff' becomes 'tar' (tar is a sticky substance).
'with' says to put letters next to each other.
'english' becomes 'E' (abbreviation).
'tar'+'tar'+'e'='TARTARE'
Can you help me to learn more?
(Other definitions for tartare that I've seen before include "Served raw, steak say" , "Type of mayonnaise sauce" , "(Mayonnaise) sauce; raw (steak)" , "Mayonnaise dressing served with fish" , "Saucy thing" .)