Food data are important for policymakers and researchers to understand food acquisition and expenditure, nutrition, food environments, food assistance, and so on. However, the collection of food data by asking people to recall their food acquisition is challenging for respondents sampled from a general population due to faulty memory, the burden associated with responding in a timely manner, and lack of knowledge. To improve recall and reduce reporting error, survey organizations may provide a diary for respondents to record foods obtained during the study period as they get them. This paper reviews three types of food diaries used in existing …