Keeping your food fresh is a big task. A lot of things needs to be taken care of and we should know what all food items should be stored together and what all food items should be kept apart.
Two food items that fall into the second category are Potatoes and onions. Both onions and potatoes are to be stored in a cool, dry place, away from the sunlight with a dark pantry being the perfect choice.
However, keeping them together can cause a lot of problems. Onions, which produces ethylene can force the potatoes to sprout. So unless you are planning to start a potato garden, its better if you avoid keeping potatoes and onions in different baskets.