They seem to have done measurements at different temperatures, so we can nudge the lower bound higher. They also said they used transparent champagne bottles..

They seem to have done measurements at different temperatures, so we can nudge the lower bound higher. They also said they used transparent champagne bottles... Did they use Cristal for this? Now I really want to know what happened to the champagne! Although Cristal at 30 C may not be ideal to drink... And what was their budget?