So this is the Fondue burger, so called because it takes on both elements of a fondue and a burger. Well it actually takes on a lot more than that if I am honest! It is essentially an entire meal in a burger and is very naughty! A burger is cored out using a cookie cutter, filled with fries / chips & bacon and drenched in fondue!
First make the chips, slice a large washed potato into even chips sizes (peel if you wish), place on a lined baking tray, drizzle a little oil on top and season generously with salt and pepper. Coat the chips fully in the oil and seasoning and bake in the oven for 30 minutes until golden brown. The oven needs to be at 180c or equivalent see conversion charts.
Next up grab a frying pan and warm over a medium heat, slice the bun in half toasting both of the cut sides until charred. Leave to one side then use the residual heat in the pan to cook the burger, adding a little oil (about a tsp) to help it cook. Continue to cook the burger until well charred on either side for about 12-15 minutes. Once done leave to rest on kitchen towel.
After a couple of minutes, core out the top bun and the burger patty with a cookie cutter.
Make the fondue by combining both the cheeses in a bowl with the flour and stirring well to coat. Pour the wine into a saucepan and bring to a heat on a low flame, do not simmer it, but once you see bubbles appearing, add in the cheese in batches, whisking as you go, until all the cheese is in the pan. Keep whisking as it thickens up over the heat, add a few splashes of milk if you wish to help thin the fondue out and keep warm. This should really be your last step before building so hold back on the fondue until everything is ready.
Build the burger, lay down the base, add some mayo, the salad, a tomato slice, the cored burger patty, a squeeze of relish, then stuff with the chips and bacon slices. This should look pretty cool, then carefully ladle over the gooey melted cheese mixture! Season with a little pepper if you wish, amazing!