Millions face food safety threats, with 70% of rural African staples like cocoyam and sorghum harbouring toxic cyanogenic glycosides. To ensure safe consumption, we employed neutron reflection, a rapid, sustainable technique, to assess hydrogen content, which inversely correlates with cyanide levels. This non-destructive approach proved effective, paving the way for routine food quality control and improved public health through the innovative application of particle radiation technology.