Ideally food for a bris should be kosher. There are varying standards of Kosher. Feel free to discuss this with Rabbi Schusterman.
While Rabbi Schusterman doesn’t take responsiblity for the kashrut of the following caters here is a list. They are under the Hashgacha – Kosher supervision of their respective establishments!
Caterers and Bakery
1049 Main Street
Worcester, MA 01603
Phone: (508) 752-7749
402 Harvard Street
Brookline, MA 02446-2921
428 Harvard Street
Brookline, MA 02446-2497
Catering By Tevya/ Levines Kosher Market
(978) 535-6449 or http://www.levineskoshermkt.com/
474 Lowell Street Peabody, MA 01960
Natick, MA 01760-4166