A dessert made of rhubarb grown in West Yorkshire was served to MPs as part of a campaign to give the food protected status.
Rhubarb has been grown in West Yorkshire since the 19th Century
The crumble, made from the "rhubarb triangle" - an area around Leeds, Bradford and Wakefield - was served at the House of Commons restaurant.
Normanton MP Ed Balls, who has been backing the campaign for protected status, helped put it on the menu.
Rhubarb has been grown in West Yorkshire since the late 19th Century.
Earning the food protected status would mean extra European funds to promote it, and it would also get legal backing against other products made outside the area.
Other British foods that already have the status include Stilton cheese, and the supporters of Melton Mowbray pork pies and Lincolnshire sausages are also bidding for the protection.
Wakefield holds its annual Rhubarb Festival every February where visitors get the chance to sample different types of local rhubarb.
Mr Balls said: "I'm really proud that our area's finest rhubarb was on the menu at the House of Commons for everyone to enjoy.
"It went down a treat and by the time we'd finished our lunch it had almost sold out."