An official from Guinness in London was in Colombo to monitor the event, the organizers said.
The record was broken on October 08, using 64 kilograms of tea, 160 kilos of sugar, with the organizers boiling 4,000 litres of water in specially made heaters.
The Sri Lanka unit of GlaxoSmithKline, who were behind the record, also added 875 kilograms of their 'Viva' branded malted milk to the mix.
"You see many launch campaigns happening every day, every minute all around the world," GSK's Sri Lanka chief Sachi Thomas said.
"We wanted to do something different, something that people would talk about for months to follow.
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The publicity event was backed by JWT Sri Lanka, an advertising agency.
"Not many companies are receptive to embarking on a challenge like this," Thayalan Bartlett, chief executive of JWT, Sri Lanka said.
"It could result in either a huge success or a terrible failure.
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