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

https://shanesgreatperspectives.yousher.com/why-you-should-not-fill-champagne-glasses-to-the-brim

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