Minced beef by the pound, note, won’t make you strong (6)
I believe the answer is:
feeble
'won't make you strong' is the definition.
I can't judge whether this defines the answer.
'minced beef by the pound note' is the wordplay.
'minced' indicates an anagram.
'by' means one lot of letters go next to another.
'the pound' becomes 'l'.
'note' becomes 'e' (musical note).
'beef' is an anagram of 'feeb'.
'feeb'+'l'+'e'='FEEBLE'
Can you help me to learn more?
(Other definitions for feeble that I've seen before include "Weak from illness or age" , "Very weak, infirm" , "Weak, frail" , "Wimpish" , "Lacking vitality, very weak" .)