In brasserie, at the end, old trick: Everyman's saving money (7)
I believe the answer is:
economy
'saving money' is the definition.
'economy' can be an answer for 'saving' (I've seen this before). I am not sure about the 'money' bit.
'in brasserie at the end old trick everyman's' is the wordplay.
'in' means one lot of letters goes inside another.
'at the end' says to take the final letters.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'trick' becomes 'con' (a con is a fraud or trick).
'everyman's' becomes 'my' (where the crossword setter is 'Everyman').
The last letter of 'brasserie' is 'e'.
'e'+'o'='eo'
'eo' going around 'con' is 'econo'.
'econo'+'my'='ECONOMY'
Can you help me to learn more?
(Other definitions for economy that I've seen before include "See 22" , "Using little" , "Country's system of wealth creation" , "Careful expenditure" , "Me coy? No! (anag)" .)