Put kilo on, occasionally full of fig pudding (5)

'put' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's an association between them I don't understand?

'kilo on occasionally full of fig pudding' is the wordplay.
'kilo' becomes 'k' (phonetic alphabet: alpha, bravo, charlie etc.).
'on' means one lot of letters go next to another.
'occasionally' indicates alternate letters.
'pudding' is an anagram indicator (a mixture or pudding of the letters).
'full'+'of'+'fig'='fulloffig'
The alternating letters of 'fulloffig' are 'ulfi'.
'k' after 'ulfi' is 'ulfik'.
'ulfik' is an anagram of 'KULFI'.