In this video, jenny Jones shows us how to store potatoes and onions correctly. Most people want to keep their vegetables fresh and for the longest time possible. Unfortunately, both of these vegetables give off gases that aren't good for each other so they cannot be stored together. The onions will get soggy and the potatoes will start to grow things. If you want your onions and potatoes to stay fresh , make sure you store them separately. Keep them stored in a cool area and you will have fresh onions and potatoes for much longer than you would have them if they were stored together!