What the NOM* says about Methanol in alcoholic beverages *Norma Oficial Mexicana- Official Mexican Standard The affirmation that tequilas contain Methanol is true and is recognized in the Official Mexican Standard "NOM-142-SSA1 / SCFI-2014, Alcoholic beverages. Sanitary specifications. Sanitary and commercial labeling ", issued by the Ministry of Health. In fact, in its previous version, "NOM-142-SSA1-1995" such a norm is explained in section B.4.1.1: