As I understand, and this is what I just heard (ie I have no source), that the dome use to have all the beer kegs in one central location (or area specific) and pumped it to each individual draft tap in the building. Because of this it cost more to pump and pressurize the kegs with CO2 so instead they used N2O (laughing gas).
I know now that kegs are located locally for each beer vendor so its no longer the case. However it would make a lot of sense if it was N2O, your drink 4 beers and get faaaar more buzzed than you regularly would due to the laughing gas bubbles, but the buzz does not last as long as alcohol normally would. Additionally it would never show up in the alcohol content reading of the beer (Both CO2 and N2O both have molecular weights of 44g/mol so it would not affect the density of the beer which is used in measuring the alcohol content)
/tinfoil hat
Last edited by Tacopuck; 10-08-2014 at 01:45 PM.
Reason: typo
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