Summer in Australia is hot. Properly hot. The kind of heat where you don't want to cook, don't want to eat anything heavy. You want cold watermelon straight from the fridge, sweet and crisp. Someone somewhere figured out it goes brilliantly with salty feta cheese — sweet and salt together, mint for freshness, a squeeze of lime. Takes ten minutes to throw together. You serve it at barbecues, Christmas lunch, any time the temperature's pushing forty and you need something light and bright. This is summer on a plate.