In this fun "C" challenge, Chef Leah Wildman makes dishes incorporating the satisfying flavours of cheddar cheese and chestnuts. She starts with a bacon cheeseburger, but it's not your typical bacon cheeseburger. Instead of the bacon and cheese on top, she puts it inside the burger. She decides to throw some onions into the stuffing as well, for added flavour. Next she moves on to a fresh tagliatelle pasta with chestnuts, pancetta and sage. Finally, Leah faces the challenge of using both ingredients in a single satisfying dish.