Five bottles of spirits and £1,500 was taken from the Cinnamon Lounge, in Twickenham Road, Isleworth , overnight on Saturday, March 19.
Police said the burglary was reported to have taken place between 11.30pm on Saturday March 19 and 10.45am the following day.
They said a suspect had entered through the rear fire exit and walked into the pantry area, where he helped himself to the bottles, before breaking into the office and taking the cash.
A suspect, caught on CCTV footage searching behind the bar area, is described by police as a slim white man, aged in his 20s.
He was wearing a striped bobble hat, white zipped dark blue jacket, blue jeans and black and white trainers.
Anyone who recognises him is asked to call police on 101, quoting the reference number 209664, or to call Crimestoppers, anonymously, on 0800 555111.
getwestlondon originally published the CCTV footage in April as part of police appeals to trace a number of men wanted in connection with alleged burglary, theft and assault in Hounslow.
Police are also appealing following an incident at Neasden Tube station in which a man was allegedly racially abused and almost robbed.