Stole ultimately neat container for sauce (4)
I believe the answer is:
boat
'container for sauce' is the definition.
I can't tell whether this definition defines the answer.
'stole ultimately neat' is the wordplay.
'stole' becomes 'boa' (both can mean a type of scarf).
'ultimately' says to take the final letters.
The last letter of 'neat' is 't'.
'boa'+'t'='BOAT'
Can you help me to learn more?
(Other definitions for boat that I've seen before include "Vessel for travelling on water" , "See 12 Down" , "Water (or gravy) vessel" , "Small vessel" , "Vehicle for travelling over water" .)