This blue succulent is as good as gold here

Many celebrations of Cinco de Mayo, or May 5, owe a debt to these rolling fields of blue agave, or agave azul, the source material required to make genuine tequila. The distilled spirit is to Mexico what Scotch whisky is to Scotland and sake to Japan. Tequila is also the base ingredient in the beloved margarita cocktail certain to be served in abundance today.
© Brian Overcast/Alamy