But this is not always the case. And with more than 500 brands produced by about 70 distillers, the brand name is not a reliable indication of who made the product. Knowing the NOM is an absolute necessity if you’re keen on ensuring the provenence (and quality) of your purchase. As one of the only companies to offer tequila from several distilleries under a single brand, the ArteNOM venture emphasises this Mexican convention in marketing their tequila