More than 100 MPs have joined the campaign to save Birmingham's HP Sauce factory.
They demanded Heinz rethinks plans to move production of the famous brown sauce to the Netherlands.
The plea came in an official House of Commons motion sponsored by city MP Khalid Mahmood (Lab Perry Barr).
The world-famous Aston plant will shut next year with the loss of 125 jobs after more than 100 years of manufacturing. Heinz, which only bought HP Foods last year from Danone, is to transfer production of HP Sauce to Holland.
The Houses of Parliament are shown as a logo on the bottle's label, and it is served in Commons canteens.
The motion was signed by 105 MPs from across the country, and from all parties.
It said: "This House condemns the proposal by Heinz UK & Ireland to close the HP factory in Aston, Birmingham, and to relocate production to the Netherlands."
The MPs said they were "concerned at the loss of employment that this move will cause in an area which already has unemployment".
Mr Mahmood said: "I'm hoping other MPs will also join the campaign."