Researchers in Mexico and Germany have devised a quality assuranceprocedure that can distinguish between the real thing and faux tequilamanufactured by fraudulent sources or using non-genuine startingmaterials. The findings provide a new shot of QC to the billion-dollartequila market. The team used ion and gas chromatography together withFourier Transform Infrared Spectroscopy (FTIR), to obtain the chemicalfingerprints of genuine tequila. These fingerprints then allow them toidentify adulterated or mixed-tequila that is made with processed sugarrather than the Agave plant. The researchers explain that combiningspectroscopic and chromatographic methods provides a more accurateidentification than previous attempts that focused on other chemicals orisotopic analysis. The same test works with other Agave spiritsincluding including mezcal, sotol and bacanora.