// Definition
Laboratory analysis of cannabis flower for leftover nutrients from the growing process that can affect taste, smoothness, and consumer safety. Some jurisdictions like Switzerland include nutrient residual levels in their compliance testing, while most US and Canadian markets do not.
// From the Episode
Third Eye Organics' representative discussed encountering nutrient residual testing in Zurich, Switzerland, where cannabis cannot have excessive nutrients remaining in the flower. He argued this explains why some legal market flower burns harshly or tastes bland, noting that overfeeding creates a 'signature' across strains where they all share a similar off-putting quality rather than expressing unique genetic character.