Topo Chico is a naturally sparkling mineral water from Monterrey in northern Mexico, drawn from a spring at Cerro del Topo Chico and bottled since 1895. Firmly mineral at around 700 mg/L with a brisk, characterful sparkle, it has built a devoted following well beyond Mexico, prized both on its own and as the backbone of cocktails and highballs. The genuine mineral source and long history set it apart from manufactured seltzers, and its lively bead and savoury edge give it real presence in a glass. Served over ice or in a cocktail, it is a cult sparkling water with authentic provenance.