The rather tangy version of popular brown cola available in a widely dispersed chain of supermarkets throughout the UK and Ireland. Whilst not a major competitor in the Pepsi challenge due to its harsh and unrelenting nature, Tescoke is still great value for money at a fraction of the cost of 'the real thing'.
Also, when there's Jack Daniels in it, who gives a f*ck!
Dude 2: "Yeah, but its this nasty Tescoke, not the real stuff"
Dude 1: "What do I care? Im mixing Jim Beam n Jack Daniels - give it here!"