It's sweet and most elevating (6)
I believe the answer is:
raisin
'it's sweet' is the definition.
I know that 'sweet' relates to this answer.
'most elevating' is the wordplay.
'most' means to remove the last letter.
'elevating' becomes 'raising' ('raise' can be a synonym of 'elevate').
'raising' with its last letter removed is 'RAISIN'.
'and' is the link.
Can you help me to learn more?
(Other definitions for raisin that I've seen before include "Dried grape used in cakes" , "sultana, say" , "Fruit for the Christmas cake" , "A dried grape used in cake" , "A dried grape, nice in cake" .)