Cold One is the most popular brand of beer in Free Country, USA. They are shipped in brown, nondescript bottles. The Cold One motto is "A One that isn't cold, is scarcely a One at all." Despite this, cool, room temp-a-ture, warm, and not-so-cold ones have been introduced. Although there has been some debate as to whether they are actually alcoholic or not, it is shown in Peasant's Quest that the Kerrek rejects Cold Ones because he is a teetotaler. The Strong Bad screensaver displays "Premium Alcoholic Cold Ones", making it clear that a Cold One is a refreshing type of beer. Also, Room Temp-A-Ture Ones are a variant that is "brewed in Foreign Lands".
It is revealed in the email "super powers" that Strong Bad can use the diamond-shaped icon on his head to open a Cold One.
Matt Chapman revealed in The Jeff Rubin Jeff Rubin Show Interview - 7 July 2014 that Nickelodeon and Disney told him that he would have to cease all references to Cold Ones if the series were to be broadcast on their television networks.
According to Strong Bad, Cold Ones obey the following Property of Ones:
The One itude is directly proportional to the Cold itude of the One.
Or in other words:
The colder it is, the more of a one it is.
