Sonsie

• resultFail
• critical violations1
• last inspectedMay 27, 2026
• address327 Newbury St, Boston 02115

Is Sonsie clean?

Sonsie is currently Fail from Boston Inspectional Services, Health Division, from an inspection on May 27, 2026. Inspectors wrote up 1 critical violation — the kind most directly linked to foodborne illness. On Cooked's ladder that reads cooked 🪳.

What did inspectors find at Sonsie?

These are the violations recorded at the most recent inspection on May 27, 2026, in plain English, with the city's own wording underneath.

• ⚠️Good Repair and Proper Adjustment-Equipment (C) • In the basement kitchen observed multiple cold holding units with damaged gaskets | the PSI gauge at the high temperature warewashing machine is broken and missing the dial; repair or replace the broken equipment.
  Good Repair and Proper Adjustment-Equipment (C) • In the basement kitchen observed multiple cold holding units with damaged gaskets | the PSI gauge at the high temperature warewashing machine is broken and missing the dial; repair or replace the broken equipment.
• ⚠️Backflow Prevention (P) • At the dedicated prep sink in the basement kitchen there is a direct connection to the waste water system; have a licensed plumber pull proper permits and install and air gap.critical
  Backflow Prevention (P) • At the dedicated prep sink in the basement kitchen there is a direct connection to the waste water system; have a licensed plumber pull proper permits and install and air gap.

When was Sonsie last inspected?

Sonsie has 67 inspections on record going back to February 1, 2008. The 12 most recent are shown below.

Sonsie vs Back Bay

Back Bay runs 81% clean across 519 tracked restaurants — 417 clean, 46 mid, 50 cooked.

Against the 519 spots Cooked tracks in Back Bay, this one comes out cleaner than 11% of them.

Other spots in Back Bay

• ✓ Whiskey's Steakhouse & Saloon
  clean · February 10, 2020
• ✕ Noon Mediterranean Grill
  cooked · January 26, 2018
• ✓ Wisteria House
  clean · July 25, 2007
• ✕ Stephanie's On Newbury
  cooked · December 6, 2018
• ✓ Au Bon Pain
  clean · July 26, 2011
• ✕ Elenas Cafe
  mid · February 15, 2023

See every restaurant inspection in Back Bay →

How Boston grades restaurants

Boston reports inspections as a pass or a fail, with no score and no letter. What separates a bad fail from a trivial one is the violation severity ladder: a single star is a minor issue, two stars is more serious, and three stars marks a critical foodborne-illness risk factor — temperature abuse, bad handwashing, cross-contamination. A restaurant can fail on paperwork alone, which is not the same as failing on food safety. Cooked splits Boston fails accordingly: a fail with a three-star violation reads cooked, a fail on minor items only reads mid.

Source: Boston Inspectional Services, Health Division via Analyze Boston. Cooked refreshes this data daily — this listing's most recent inspection is dated May 27, 2026. Inspection results describe one moment in a kitchen's life, not a permanent verdict.