Identifying the fresh vegetables foodshed of Brazzaville: A new dataset from a market-based survey.

This dataset documents vegetable supply flows in Brazzaville, compiled through a targeted survey of wholesale and retail vendors operating in the city's main markets. The survey aimed to capture information on 16 vegetables inflows during one day in dry and rainy seasons. Data describes food flows in terms of value, volume, and origins including production sites, regions and intermediary vendors if applicable. The dataset was produced using field-based questionnaires. Surveyors conducted in-person interviews with market vendors, recording prices, quantities and details on sourcing locations. The resulting data provides harmonized variables describing food flows and supply nodes. This new dataset offers a detailed mapping of the channels through which vegetables reach the city of Brazzaville and provides a basis for examining spatial patterns of supply and vendor networks. Such data had not been produced since the 1990s. The dataset can be reused for research and planning analyses related to food provisioning, food system organization, transport logistics, and market dynamics. It also offers potential for comparative work with similar datasets from other urban contexts, especially in Central African cities, as well as for integration into modelling exercises exploring food flows and market accessibility.