Proof endive salad is cold and gives energy (8)
I believe the answer is:
evidence
'proof' is the definition.
(thesaurus)
'endive salad is cold and gives energy' is the wordplay.
'salad' indicates an anagram (salad can refer to a mixture).
'is cold' becomes 'c' (eg on taps).
'and' means one lot of letters go next to another.
'gives energy' becomes 'e' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'endive' anagrammed gives 'eviden'.
'eviden'+'c'+'e'='EVIDENCE'
Can you help me to learn more?
(Other definitions for evidence that I've seen before include "Information leading to proof" , "Confirmation" , "Testimony in a court of law" , "Information given in a court case" , "Information in a law case" .)