Form 4 x burger patties and flatten them out to be larger than the size of the bun *see tips*
Mix mayonnaise & horseradish sauce together
Cook the burgers on your BBQ @ 200c for 2-3 minutes per side for a nice medium burger
Place a little horseradish mayo on the base followed by your burger. Top with caramelised onions, grate some stilton over the top and finish with a little more mayo on the top bun
Repeat and DEMOLISH with a glass of Lionheart of the Barossa Shiraz!
Caramelised Onions
Heat the olive oil on low heat and add the onions, chili flakes & sea salt to the pan
Cook on a low heat for approx. 20-30 minutes, stirring occasionally so they don’t stick
Once the onions are soft add the brown sugar and balsamic. Cook for approx. 5 minutes longer until they softened and caramelised. Stir regularly as they can burn easily.
Notes
Tips/Tricks
when forming your burger patty it’s important for it to be thinner and wider than you want it to be. As the burger cooks it will shrink in diameter and grow thicker in height. I always start with mine about 1” wider than the burger bun
allow your burger meat to rest for 2-3 minutes before serving so that the juices have time to redistribute
you can use shop-bought caramelised onions BUT homemade ones are 100% worth making
I have put the measurements/weights for the mayo and rocket. The truth is you can just eyeball it 2 parts mayo to 1 part horseradish is a good ratio but you like more or less spice!
freezing the blue cheese seems odd but it allows you to grate it with ease giving you a nice kick of blue cheese without overpowering the burger