He is also the co-founder and President of the Board of the Participatory Budgeting (PB) Project. PB is a process in which part of a public budget is turned over to those who are most impacted by that budget. Over the last three years, the Participatory Budgeting Project has worked with community organizations and elected officials to bring PB to four cities in the United States. Menser is completing a book on PB and other participatory democratic programs that have been undertaken by governments, businesses, and communities. In particular, he is interested in democratic theories and practices that focus on ecological and social justice in urban regions and food systems.