Spill the beans and stewed kale (4)
I believe the answer is:
leak
'spill the beans' is the definition.
(thesaurus)
'stewed kale' is the wordplay.
'stewed' is an anagram indicator.
'kale' is an anagram of 'LEAK'.
'and' is the link.
(Other definitions for leak that I've seen before include "Lose water" , "Reveal (secret)" , "Escape - make (confidential information) known" , "Accidental hole that allows fluid to escape" , "Accidental escape of water from lake" .)