Kate's excited sailors with English dish (5,7)
I believe the answer is:
steak tartare
'dish' is the definition.
(steak tartare is a kind of dish)
'kate's excited sailors with english' is the wordplay.
'excited' indicates anagramming the letters.
'sailors with' becomes 'tartar' (I can't justify this - if you can you should give a lot more credence to this answer).
'english' becomes 'e' (abbreviation).
'kates' anagrammed gives 'steak'.
'steak'+'tartar'+'e'='STEAK TARTARE'
Can you help me to learn more?
(Other definitions for steak tartare that I've seen before include "Dish of egg and raw meat" , "cold dish!" , "raw main" , "Become proficient" , "Dish of raw meat and eggs" .)