I buy a bunch of bananas, but they usually go too ripe before I can finish all of them. Is there a way to make them ripen less quickly?
There are a number of things you can do to slow the ripening of bananas:
Keep them cool - bananas will ripen less quickly in the fridge
Wrap the stems in cling film - this is where most of the ripening gas ethylene comes from. Covering it will reduce the amount of gas that escapes
Separate the bananas from other fruits - Other fruits will produce even more ethylene, so keep bananas well away
Don't bruise them - bruising will break down the skin membrane, causing the release of - you guessed it - more ethylene. Consider a banana hook.