Here is the cattle food back, warts and all (5)
I believe the answer is:
straw
'here is' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'cattle food back warts and all' is the wordplay.
'warts' anagrams to 'STRAW'.
But, I am unsure how the anagram is indicated.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for straw that I've seen before include "Residue of cereal crop" , "Thin tube; yellow" , "Means to absorb" , "Dried grain stalk" , "'It is the last ..... that breaks the camel's back'" .)