What's Inside
The right co-man is more than available capacity
A factory can have an open line and still be the wrong partner. You are choosing a system that has to protect quality, timing, cash, and your relationship with customers.
Capacity that matches your growth
Ask what is available now, what is committed, and what happens when your volume doubles. “We can fit you in” is not a capacity plan.
Process discipline
Look for documented change control, batch records, QC release, deviation handling, and a clear owner for each handoff.
Commercial fit
Minimums, payment terms, setup fees, testing, tooling, and lead times determine whether the partnership works at your actual stage.
Communication under pressure
The best predictor is not the polished tour. It is how clearly the team answers uncomfortable questions about delays, defects, and constraints.
A practical co-manufacturer vetting process
Treat selection like an operating project, not a vendor beauty contest. Give each candidate the same brief, the same questions, and the same request for evidence. That makes the comparison useful.
Request a sample production schedule, a representative quality document, an example of how they handle a deviation, and a complete quote that states assumptions. If a candidate will not show you how the work is controlled, assume you will be controlling it later.
Write the production brief
Define SKU, format, forecast, target volume, ingredients or materials, packaging, testing, certifications, launch date, and acceptable substitutions.
Screen for capability
Confirm equipment, batch sizes, line speeds, allergen or material controls, storage, certifications, and experience with your product category.
Validate the economics
Compare total cost, not just conversion cost. Include setup, testing, freight, packaging, scrap, minimums, payment terms, and the cost of waiting.
Run a reference check
Ask former or current customers what happens when a forecast changes, a batch fails, or a retailer moves a launch date.
What to put in place before the first production run
Your operating system should exist before production starts. Freeze the approved formula or specification, define the quality release process, agree on the production calendar, and document who can approve changes.
Set a weekly operating review during scale-up. Review forecast versus order, production status, open quality issues, materials at risk, and decisions needed. The goal is not more meetings. It is fewer surprises.
Operator rule. If a change matters to cost, quality, timing, or customer experience, it belongs in writing before it reaches the line.