The present disclosure concerns methods of detecting counterfeit liquid and/or food products, particularly those used for human consumption. In certain embodiments, the claimed methods may comprise adding two or more markers to a liquid or food product, releasing the product into a stream of commerce, obtaining one or more samples purported to be the liquid or food product and assaying the samples for the presence of the markers, wherein the absence of at least one of the markers indicates that the product is counterfeit, fake or otherwise not authentic.