THIRSTY England fans are expected to sink 300million pints during the tournament as they flock to pubs across the country.
The British Beer & Pub Association estimates pubs will pour an extra 20million pints worth £94million.
Brewery Greene King expects to sell seven million pints at its venues - including 37,000 pints tonight in London alone.
A £2.7billion spending spree is also predicted - surpassing the £2bn spent during the winter World Cup in Qatar - as fans take advantage of the sociable game times and warmer weather.
Those watching the Three Lions at home are expected to send supermarket sales soaring.
Widow brings pillow with late husband's face on it to pub every New Year's Eve
Tesco predicts it will flog 33million packs of beer and cider over the coming month.
While Asda is expecting to sell 14million units of Budweiser over the tournament.
The amount is enough to cover 3,000km - the distance from Leeds to Gelsenkirchen where England play their first game.
Jeff Moody, Commercial Director of Bira Group, said: "The Euros arriving in the summer months is fantastic timing for independent retailers after a challenging period.
"With favourable kick-off times aligning with the sunshine, we're expecting pubs, hospitality businesses, convenience stores and electrical retailers in particular to cash in as fans flock to watch the matches."
It comes as German cops who slapped a strong beer ban on Three Lions fans say they should smoke cannabis instead.
Fears of booze-fuelled trouble at Sunday's game against Serbia saw stadium chiefs told to serve only weak beer or shandy.
But cannabis was legalised in Germany on April 1, and a Gelsenkirchen Police spokesman told The Sun yesterday that fans getting "Harry Kaned" on pot will be allowed to puff in peace.
Stephan Knipp said: "It's no problem for fans to smoke cannabis on the street.
"If we see a group of people drinking alcohol and looking a bit aggressive, and another group smoking cannabis, of course we'll look at the group drinking alcohol.
Gangsters ‘call for ceasefire’ after deadly Christmas Eve pub shooting
"Drinking alcohol can make someone more aggressive, and smoking cannabis puts people in a chill mood.
"We want to prevent violence and keep people safe.
"Our focus will be on fans who are drinking and potentially getting violent — that's why we in place safety precautions on alcohol."
