Vegetable greed -- madly purchasing one hundred and four Swedes? (3,7)
I believe the answer is:
red cabbage
'vegetable' is the definition.
(I know this)
'greed madly purchasing one hundred and four swedes?' is the wordplay.
'madly' indicates an anagram.
'purchasing' indicates putting letters inside (some letters take possession of others).
'one hundred' becomes 'c' (Roman numeral).
'and' says to put letters next to each other.
'four swedes?' becomes 'ABBA' (pop band made up of four Swedes).
'greed' is an anagram of 'redge'.
'c'+'abba'='cabba'
'redge' going around 'cabba' is 'RED CABBAGE'.
(Other definitions for red cabbage that I've seen before include "pickle ingredient" , "one in a pickle" , "something to eat" , "may be handed to you on a plate" .)