Parliament’s bar bill last year was £1.8million and has tripled in two years.
Figures for 2015/16 show 42,711 bottles of fine wine and champers - including 3,000 bottles of Sauvignon Blanc,100 bottles of fizz and 300 bottles of port - were sold at £1.7million.
By comparison, the champagne and wine bill in 2013/14 came to £601,895. The cost doubled to £1,183, 820 in 2014/15 - then tripled to £1,786, 2014 for 2015/16.
A FOI request revealed ‘Champagne Charlie’ MPs, peers, their staff and guests also spent £53,061 on beer, lager and cider last year.
And there was an order, order, order for £69,333 of spirits in House of Commons bars and restaurants.
Latest figures reveal Parliament’s bars and restaurants sold 1,685 bottles of Smirnoff vodka, more than 600 bottles of Pimm’s, 499 bottles of Famous Grouse whisky and 96 bottles of Bailey’s.
The biggest selling gin was Gordon’s, at more than 6,000 bottles. More than 4,000 pints of Guinness were served, 16,122 pints of guest ales and nearly 5,000 pints of Grolsch.
Carling was another big seller with almost 6,000 pints downed, along with 4,947 bottles of Peroni and 2,000 pints of Coors Light.
A Commons spokesman stressed money spent in subsidised bars and restaurants on the banks of the Thames included ‘outside’ functions such as weddings.
Last January, UK chief medical officers lowered the limit on alcohol consumption for men from 21 units a week to 14, the same as women.
In the Commons, non-alcoholic bottles of Beck’s were bought on just 251 occasions in the last financial year.
Catering services are provided by an in-house Commons team, all monitored to ensure value for money.
The cost of Parliamentary catering has halved, from £6 million in 2010/11 to £2.4m in 2014/15.
Customers include not only 650 MPs, but 14,500 pass-holders, such as civil servants, contractors, Peers, members of the Press Gallery, and non-pass holding visitors.
A House of Commons spokesman said they had more than halved catering costs since the last Parliament.
“It is not possible for the catering service to run at a zero cost due to the irregular hours and unpredictability of Parliamentary business,” he added.
“To reduce the overall running costs to the taxpayer, in recent years we have increased the number of commercial events held in the House.
“Sales to external customers accounted for more than half of alcohol sales in the past two years.”