A man excited about Heather's Budweiser, bourbon and Twinkies? (9)
I believe the answer is:
americana
'budweiser bourbon and twinkies?' is the definition.
(Budweiser, bourbon and Twinkies are US products)
'a man excited about heather's' is the wordplay.
'excited' indicates anagramming the letters.
'about' means one lot of letters goes inside another.
'heather' becomes 'erica' (the plant genus Erica includes heather plants).
'man' with letters rearranged gives 'mna'.
'mna' enclosing 'erica' is 'mericana'.
'a'+'mericana'='AMERICANA'
(Other definitions for americana that I've seen before include "Things such as six down answers in this puzzle" , "Yank stuff" , "Things associated with the US" , "Wild West material?" , "Country objects" .)