Kumquats are basically citrus' wild party girl: the peels are sweet, the fruit is sour.
When I stumbled on a small tree covered in unused kumquats, I decided to do another Waste Not, Want Not Challenge. "What does it matter, it's just one tree?" I was asked.
With 925 million people hungry worldwide, it matters. Here's how much food that one tree generated, and here's why taking the Waste Not, Want Not Challenge will change your relationship with food.