Field Guide 3 — The Prototype Was Approved. What Changed in Production?

Investigate product differences with a clear process and better evidence.

Your approved sample had the right flavor, texture, and appearance. The production batch doesn’t quite match. Perhaps it’s thicker, less flavorful, harder to dissolve, or simply inconsistent. Without a structured investigation, it’s easy to start adjusting the formula before understanding what actually changed.

This field guide helps you work through the gap between an approved prototype and a commercial product. Learn how to examine ingredient, equipment, and processing differences, document findings, and establish a clearer process for evaluating proposed changes.

Use it to:

• Define the differences between the approved sample and the production batch.

• Trace possible causes using records and measurable observations.

• Assess proposed adjustments before approving them.

• Clarify who must review, document, and authorize product changes.

• Turn lessons from one run into better controls for the next.

Useful during pilot trials, first production runs, or changes to an established product, this guide gives founders and their manufacturing partners a shared structure for troubleshooting. It helps you make decisions that can be explained, checked, and carried into future production.