Darrel's off to the store (6)
I believe the answer is:
larder
'the store' is the definition.
(food store)
'darrel's off' is the wordplay.
'off' is an anagram indicator.
'darrel' is an anagram of 'LARDER'.
'to' is the link.
(Other definitions for larder that I've seen before include "Stock of provisions" , "Food storeroom" , "Pantry" , "Buttery" , "Food store" .)