May 29: Drinkers of Carling lager in the UK will know that it’s cold enough for consumption with the launch of new cans featuring a smart label next month.
Each can has an indicator with thermochromic ink that changes from white to blue when the lager is cold.
Coors Brewers, which distributes Carling in the UK, has also used the indicator on cans and bottles of Coors Fine Lite beer and Grolsch, but faced a challenge when its can manufacturer Ball Packaging Europe tried to adapt the special inks to steel rather than aluminium cans.

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