One YouTuber and member of the zero-waste movement gave a first-hand look at how she saves boxes of still-usable produce from ending up in the landfill, and how to save loads of money doing it. An Australian content creator spent just $8.99 on three markdown produce boxes at Rochedale South Markets, then turned the haul into canned apple pie filling, a fresh pie, freezer-ready mirepoix, dried mushrooms, and homemade vegetable stock. Here's what …