A good policy is to bring enough for 10 to 12 people. Announcements may appear in Hashofar about what to bring, or you may be individually contacted. When in doubt, desert is usually a safe bet. There are two things to remember about feasting at the shul. First, we are kosher, and the kitchen is dairy.
Fish is permitted.
Second, we do not have a maintenance staff to clean up after us. The care of the synagogue requires that we stay for a little while, put away chairs, clean and remove rubbish. It's usually a great opportunity to kibbitz and to play.