Over the years we have had varying degrees of success with sharing food. We have tried out a number of approaches from everyone buying their own food supplies to sharing most ingredients. We have tried both an incentive system and one based on taking turns cooking.
Nov 2012 Update: Our latest attempt at an organized shared meal system started in May 2012 and so far so good, We typically have three or four delicious community dinners per week, plus the sharing of smaller meals, snacks and treats. Usually there are leftovers. We have made some significant changes to the how we share. We now buy all our food ingredients out of a shared housefund of $230 per person per month. This fund also has been paying $35 per dinner to any of us willing to cook.
Starting this month, we are trying a slightly different way of rewarding people. Whatever is left in the house fund at the end of a month after paying for food and cleaning supplies will be distributed evenly as an hourly rate among those who recorded time spent cooking and cleaning.