Sourcing always throws up some interesting challenges, but Burger King’s product development and innovation department is currently embarking a mission that tops most.

According to a story on BrandRepublic, Burger King’s sourcing team is on the look out for ingredients to put in the UK’s most expensive burger – a take-away could set you back £85.

The idea is nothing new, after all Selfridges was scouring the world for ingredients to include in a similarly priced sandwich not so long ago, but that doesn’t make the job any easier - after all, where’s the best place to source wagyu beef from?

Then again, if food prices keep rising, maybe it won’t be too long before £85 burgers become the norm.