American drink in French house (7)
I believe the answer is:
bourbon
I believe this is a double definition.
'american drink' is the first definition.
(US whiskey)
'french house' is the second definition.
(French royal house)
'in' is the link.
(Other definitions for bourbon that I've seen before include "Chocolate-flavoured biscuit" , "Rye whiskey" , "Henry of Navarre, for one" , "10" , "American whisky; biscuit" .)