Also I always wondered what Soju was exactly, I always thought of it like a spirit alcohol like Saki or vodka. But it always confused me seeing as they drink a few beer bottle size worth of it everytime they drink so I looked it up. Soju is often called the Korean vodka.
(Sourced from google) Soju is a clear and colorless distilled alcoholic beverage popular in the Korean Peninsula. It is usually consumed neat. Its alcohol content varies from about 12.9% to 53% alcohol by volume, although since 2007 low alcohol soju below 20% has become more popular.
For reference, beer in the USA (sourced from google) ABV varies between different types of beer. Usually, beers have an ABV between 3.5% - 7%, but there are outliers with higher or lower ABVs. Some beers may have an ABV of less than 1%, while some IPAs might have an ABV well above 10%.