A Champagne tasting at home doesn’t need a long guest list or specialist gear....

https://wiki-planet.win/index.php/How_Do_I_Clean_Champagne_Glasses_So_Bubbles_Stay_Lively%3F

A Champagne tasting at home doesn’t need a long guest list or specialist gear. A few thoughtful choices make the wines easier to compare: chill them to 8 to 10°C, pour small samples, and give each glass room to breathe