Acknowledge cook has some lavanga (6)
I believe the answer is:
salute
'acknowledge' is the definition.
(thesaurus)
'cook has some lavanga' is the wordplay.
'cook' becomes 'saute' (I've seen this before).
'has' means one lot of letters goes inside another.
'some lavanga' becomes 'l' (I can't explain this - if you can you should believe this answer much more).
'saute' enclosing 'l' is 'SALUTE'.
Can you help me to learn more?
(Other definitions for salute that I've seen before include "Gesture of greeting" , "Kind of welcome" , "Gunfire, perhaps" , "Military gesture of respect" , "Greet in military style" .)