We describe a field protocol for studying how consumers respond to health information and identified tasting of nutrition-sensitive staple foods. It combines BDM instructions, a non-binding practice auction, two rounds of private bids, separate control, information and tasting sessions, a random-price draw and a post-auction survey. We applied the protocol with 693 adult rice buyers in Cameroon, Côte d’Ivoire and Uganda. Cameroon and Côte d’Ivoire each had 21 sessions, with treatment delivered between bidding rounds. In Uganda, treatment preceded the first observed bids and was closely aligned with location; Its comparisons are therefore exploratory. Rice purchase payments were waived after the draw, so we interpret the bids as structured valuation responses rather than fully consequential willingness to pay. We describe the procedures and implementation limits, report operational checks of the analytical files and illustrate bid levels and paired revisions. The substantive economic analysis is reserved for a companion research article. - Combines BDM training, repeated private bids, health information and sensory evaluation in one field procedure. - Links bids, sensory ratings and survey responses to session and product records through anonymous participant IDs. - Describes implementation deviations and the records needed for replication.