Lard costing nothing? Is this the healthy version? (3-4)
I believe the answer is:
fat-free
'is this the healthy version?' is the definition.
(a fat-free version of something might be healthier)
'lard costing nothing?' is the wordplay.
'lard' becomes 'fat' (lard is a type of fat).
'costing nothing?' becomes 'free' (given away for free).
'fat'+'free'='FAT-FREE'
(Other definitions for fat-free that I've seen before include "Without solid animal or vegetable oils" , "Like some restricted diets" , "Like many low-calorie foods" , "Skimmed" , "Far feet (anag)" .)