Oriental Brewery, more commonly known as simply “OB,” is the second largest brewery and sells the third most popular brand in South Korea and is probably the best known outside of Korea. Purchased by InBev in 2003, their OB Lager was renamed just OB. A re-tooled version of OB Beer, the original formulation created in 1948, which was before the brewery was even called OB, is being released today under the brand name “OB Blue.”