Longevity: Tequila does not expire but can alter in style once opened, particularly when the bottle is about 25% whole.
Añejo tequilas must be sipped neat, right after dinner in the copita or snifter and maybe savored https://bookmarks-hit.com/story18308350/helping-the-others-realize-the-advantages-of-tequila-gran-centenario-40