This awesome trick gives you a super quick and easy way to slice up a pineapple into a perfect-to-share party food. Although pineapples are only naturally in season from March through June, new growing methods allow us to keep things sweet and tropical even into the winter months. And while we usually think of pineapple as a summer fruit, there are some great reasons to consider making pineapple part of your winter diet. Consider this: Vitamin C is your body's primary water-soluable antioxidant, defending your immune system from things like colds and flus. Vitamin B1 is super for energy production and chasing away the winter slumps caused by less daylight.