Here now, a dispatch from London, England by native New Yorker and special Eater correspondent Michael Cosentino.
Living in the UK, I was sad (okay, happy) that I wouldn't have the opportunity to experience KFC's artery-busting Double Down sandwich. So when I heard that Tesco was jumping into the novelty food game and creating a limited-edition lasagne sandwich, I had to see what it was all about. After all, my name ends in an 'o' and I'm from Brooklyn. Lasagne is in my blood.
I vowed to find this sandwich and eat it for science. When I originally heard that the sandwich would have a layer of mayonnaise in between the lasagne and the bread I had deep, deep reservations about what I was about to subject myself to. Mayo is the blight of sandwiches in the UK; it's on everything and anything in copious quantities and it's usually squashed between two soggy pieces of bread. Gross.
Today I managed to find the sandwich in the Tesco Metro in Covent Garden, sitting on the bottom shelf with a few others. I snagged one, avoiding letting anyone see me buy such a thing and hurried home. How did it go? Check out the video below for the gory details.
Video: Eating Tesco Lasagne Sandwich, so you don't have to
Bottom line: I imagine this sandwich isn't going to be around for very long. There's no justifiable reason for it to exist, and should only be eaten as a sociological experiment. When measured against all sandwiches in the world, I rate this about a 0.1 out of 10, but when compared to other Tesco packaged sandwiches, this is a surprisingly edible 8 out of 10.