Ripening mangoes is actually really easy. They’re climacteric fruits, which means that they can ripen even after harvest, so you’re in luck. Just grab a brown paper bag and toss in your unripe mangoes, along with a few bananas or apples.
Leave the bag on the counter for a few days and your mangoes should ripen up quickly. Once ripe, transfer your mangos to the fridge until you’re ready to enjoy them.