For what it’s worth, this shows 524 W. Van Buren as being the Brizzolara Buffet in 1906.
https://archive.org/stream/proceedingsofcit58chic/proceedingsofcit58chic_djvu.txt
Following up on njbenz's lead, there was indeed a saloon at the above address, and it was licensed to S. Brizzola and A. Tassi. (Note: Spelling)
The link below is for the "List of Licensed Saloons in the City of Chicago" for licenses issued May 1, 1908.
https://babel.hathitrust.org/cgi/pt?id=uiuc.2226516;view=1up;seq=78
I couldn't help but noticed that there is another saloon on the same street, also licensed to a Brizzolara.
That one was at 428 W. Van Buren, and was licensed to D. and Chas. Brizzolara. (License # 5160, in Ward #19).
And to round out the research, the other Brizzolara saloon licenses mentioned in the Proceedings of the City Council include: (Date: Oct 22, 1906)
Link:
https://babel.hathitrust.org/cgi/pt?id=njp.32101064987744;view=1up;seq=330
D. Brizzolara (President), Brizzolara Buffet, Inc. at 524 Van Buren (License # 3748, ward #20), with the correct spelling.
C and D Brizzolara at 495 W. Madison Street (possibly the same D and Chas. mentioned above)? Lic# 4462, ward #18 (D is probably for Dominick, Charles's brother)
Also a Fred Brizzolara at 1489 W Ohio Street Lic# 2628, ward #35.
...and finally Louis Brizzolara at 253 W. Madison. Lic# 5445, Ward #18 (a later business directory lists 252 W Madison as "Brizzolara Bros. Saloon"
Lot of saloons in Chicago back then...