A case study is presented that describes the 10-year evolution of a local i
ntersectoral project aimed at improving components of a community's food sy
stem as an approach to improving nutrition. Aspects of innovation and good
contemporary practice in collaborating for health promotion are illustrated
. Key initiators of the project were a university public health department,
a community health service, and a local government authority. Players brou
ght into the process included the agricultural sector and food retailers. S
everal strategies have contributed to the success and institutionalization
of the project. These include a specific focus on organizational developmen
t and opacity building among the key intersectoral partners and the use of
formative evaluation methods to hasten the natural phases of collaborative
problem solving. The project achieved many policy- and system-level changes
. The impact on food consumption patterns is still to be evaluated.