The news isn't so good for your leftover guac. "Conversely, if you smash up an avocado, it'll brown way more quickly, because ...

Avocados can be eaten at any time of day, with benefits when eaten at breakfast, lunch, dinner, or as a snack. They are best eaten when ripe rather than unripe or overripe.

Ever wondered why avocados brown so quickly? It's due to an enzyme reacting with air, creating melanin. While oxidized avocado is generally safe to eat, watch out for spoilage signs like bad smell or ...