|"I took out an old lady for this Stella... worth it"*|
News of the error spread quickly from about 1900 BST, with many people posting messages on social networking sites.
There were also problems at a store at the Silverburn shopping centre in Glasgow and in Bellshill.
One customer said the situation was "bedlam" as people phoned their friends and some went home to change clothing to come back and buy more beer.
Twitter user Graham McKenzie tweeted: "Price glitch for beer has literally caused a stampede at the local Tesco. Tempers are flying in car park."
Rebecca Macdougall tweeted: "Was casually chatting to my dad about the beer situation at Tesco mention 3 crates for 11 quid and he sprints to the car."
To quote the Red Stripe ads, Hooray Beer!
Source -> http://www.bbc.co.uk/news/uk-scotland-13621315 via gizmodo.com
*made that up, probably not true.