> Bia hơi (pronounced “bee-ah hoy” and meaning “fresh beer”) is brewed without preservatives or added carbonation.

Tank beer (tankova) from Urquell is same but it last a week or two in the tank to my knowledge and not just 24 hours as Bia hơi. It is properly the best pilsner in the world.

You don't get beer after brewing. You get wart. Beer you get after fermentation. Since it's alcoholic, it'll last more than one day.