Some sauerkraut put up in cupboard (3)
I believe the answer is:
ark
'cupboard' is the definition.
(as in the Ark of the Covenant)
'some sauerkraut put up in' is the wordplay.
'in' says the answer is hidden in the clue.
'put up' shows that the letters should be reversed in order.
'kra' can be found hidden inside 'some sauerkraut'.
'kra' written backwards gives 'ARK'.
(Other definitions for ark that I've seen before include "protection for couples that rose in bad weather" , "Flood vessel; box (arch.)" , "Boat built to withstand great flood" , "Noah's craft" , "Noah's boat" .)