Contents of table's bread and wine (8)
I believe the answer is:
elements
This clue could be a double definition.
'contents of table's' is the first definition.
'elements' can be an answer for 'contents' (element is a kind of content). I am not sure about the 'of table's' bit.
'bread and wine' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for elements that I've seen before include "Carbon, iron and 8 Across, say" , "fire and water, say" , "First principles of the weather" , "Essential parts or the weather" , "Constituents, ingredients" .)