Here you can watch our co-founder, Tom, show you how to cook your Barcelona DIY burger kit.
Take the grilled onions and manchego out of the fridge and leave them on the side to get up to room temperature.
Get a heavy based frying pan on a high heat (don’t add oil, the burger’s got enough fat). You might want to open some windows and get the extraction on as it’s going to get smoky.
Add patties to frying pan. Press down gently on the beef to get a good sear and season liberally with salt and pepper. Cook patties to your preference – it’s hard to gauge exact timings as cooking equipment varies – but five and a half minutes on each side should give you a ‘well done’ cooked through burger. Work back from that for a pinker patty.
Once flipped, season liberally on the cooked side and add two slices of manchego to each patty. Cook for the remaining time in the pan and then finish off the burger and cheese by melting under the grill.
Leave the burgers to rest for a couple of minutes.