Hi chuckzerbe,
The level of controls for high-risk ingredients would depend on the supply chain and history with the supplier.
Typical assurance controls may include:
Minimising the length of the supply chain
Certificates of analysis from ingredient suppliers
Supplier audits/enhanced supplier approval checks
Mass balance exercises at the ingredient supplier
Supply chain audits
Use of tamper evidence or seals on incoming ingredients
Ingredient testing
Monitoring of new factors that can affect the risk will mean you can adapt your assurances to reflect changes such as poor harvests, economic factors affecting the prices etc.
Where testing is useful in identifying adulterants, I would initially be testing each batch coming in to develop a level of confidence in the ingredient/supplier and review that once you have some history of supply.
Kind regards,
Tony
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