It's Homegrown Week. Our remaining amateur bakers celebrate the traditional First Nations ingredients that can only be found right here at home in Australia. In Signature, they'll bake an open galette. In technical, they'll tackle Maggie's formidable Macadamia, Aniseed Myrtle and Bush Honey layered trifle and for Showstopper, they'll bake bread sculptures inspired by the natural world of Australia.