The complainant said the ad was not socially responsible because it encouraged binge drinking and did not stop young people buying the product.
The advertiser, 1-Day, accepted it had made an error of judgement and the description of the ad had gone onto the website without being duly scrutinised.
"As it was sold during the busy Christmas period we were not able to have all product descriptions reviewed prior to the site going live each day and this is left to our team of web content experts to use their skills to create the copy for all adverts."
If the product was to be sold again, the advertiser said it would re-write the text.
The ASA noted 1-Day's response and acknowledged it had since put checks and balances in place to ensure advertisements were socially responsible.
It ruled the matter was settled.