What is more irritating than looking at your happy yellow banana, three days later, to find that you have just got a bruised, black pulp? Bananas are climacteric fruits and excrete vast quantities of natural ethylene gas, or the plant’s ripening agent, from their stems post-harvest. We have, however, found a way to slow down decay in this specific fruit through control of its ripening using both localized temperature control and localized wrapping. In fact, it’s possible to keep bananas firm, fresh, and ready to use for up to three months with just a smart combo of localized wrapping and a stint in your freezer!
Separate the Bunch
Keeping bananas grouped as a single bunch forces the concentration of the natural ethylene gases that the fruits are producing together. Individual fruits can be separated from the group immediately after bringing the bunch home from the grocery store to help significantly slow down the natural ripening process of all of them.
Wrap the Stems
The most concentrated areas of ethylene gas will always be exiting the crowned stem of each banana. Individually wrap the plastic or aluminum-covered stems to effectively seal the fruit from outward ripening hormones, and add days to shelf-life!
Avoid the Apples
The apple, avocado, peach, and tomato are all very productive producers of the gas, ethylene, and should be kept as far as possible from any bananas in the fruit bowl.
Utilize Hanging Totes
The pressure of resting entire bunches of bananas directly on countertops creates internal bruising on the cells resting against the bottom-most bananas. Instead, hang bananas from a dedicated hook or banana tote for consistent circulation and to eliminate resting bruises.
The 3-Month Freeze Method
If you want to extend banana life for three months, a stint in your freezer will preserve the flesh until you’re ready to blend or bake it later. Freezing halts all cellular respiration, therefore completely stopping cell damage.
Peel Before Freezing
The frozen peel of unpeeled bananas will harden so drastically that separating it from frozen fruit will create an unimaginable mess! Peel all the bananas you plan to freeze well beforehand.
Flash Freeze First
Place the banana slices onto a baking sheet lined with parchment paper, making sure no slices are touching each other. Then, place in the freezer for a minimum of 2 hours. It is frozen in this amount of time because otherwise, they will cluster together into one chunk of bananas.
Freeze in the Resealable Silicone Bag
When the slices have frozen partially, you don’t need them frozen completely solid, transfer them into a sealed heavy-duty airtight silicone bag or vacuum seal bag.
Defrost Gently for Baking
Let your frozen banana slices come to room temperature in a bowl for about 30 minutes before mixing them into your banana bread or muffin batter. Don’t forget to add any sweet liquid that the bananas naturally release- it is full of concentrated banana flavor!
