Restaurant making money by lake (9)
I believe the answer is:
brasserie
'restaurant' is the definition.
(brasserie is a kind of restaurant)
'money by lake' is the wordplay.
'money' becomes 'brass' (I've seen this before**).
'by' says to put letters next to each other.
'lake' becomes 'erie' (Lake Erie is one of the Canadian/US 'Great Lakes').
'brass'+'erie'='BRASSERIE'
'making' is the link.
(Other definitions for brasserie that I've seen before include "French-style restaurant" , "Caf" , "bar in Paris" , "Small restaurant serving alcohol as well as food" , "bar serving food" .)