Sonsie celebrates twenty-one years on Boston’s famous Newbury Street serving top-notch International cuisine from award-winning Chef Bill Poirier. Open seven days a week from 7:00am to 1:00am, Sonsie boasts beautiful French doors that translate to an open sidewalk cafe in season, as well as a European lounge with deep leather chairs and sofas.  

"Sonsie: As much for the scene as for the cuisine"

-Elle Magazine

"Sonsie is the place to be seen"

-Travel & Leisure

Chef/Partner Bill Poirier


Bill Poirier is a native Rhode Islander whose interest for the culinary arts began at a young age and was influenced by his Italian grandmother’s holiday cooking and fresh vegetable garden.  His passion for cooking increased over the years, and he continued to develop his culinary skills at Johnson and Wales University in Providence, RI. 


Since 1976, Bill has been working with some of New England’s most prominent restaurants and culinary stars.  Early career highlights include working as a variety of New England luxury hotels, as well as with nationally known chefs such as Lydia Shire, Gordon Hamersley, and Jasper White.  Bill’s culinary experience has brought him to Washington, D.C., Palm Beach, Florida, and Tokyo, Japan.