Korio’s take sees nutty slices of really good whole-wheat sourdough, holding together some oozy cheddar, American cheese, and caramelised onions. They’ve got the stringy, melty cheese part down pat, I love their sourdough as well, and that’s basically the makings of a really great grilled cheese sandwich already. I do wish there was a little more oomph in the caramelised onions though: either an intense savouriness (think French onion soup), or a slight touch of acidity and sugar (balsamic caramelised onions maybe?). Would’ve added a lot more complexity to this!