Onions are arguably one of the most indispensable ingredients in the kitchen.
They come in many sizes, shapes and colors, each with their unique uses in cooking.
Being a culinary staple, people tend to buy them in bulk. Unfortunately, they often go soft or start sprouting before you get around to using them.
To avoid waste and save money, people often wonder about the best way to store onions.
This article tells you everything you need to know about how to store onions.

 Store Dry Onions In a Cool, Dry, Dark and Well-Ventilated Room

  1. Onions are best stored in a cool, dry, dark and well-ventilated room, such as a pantry, cellar, basement or garage .
  2. This is because they easily absorb moisture. If temperatures or humidity are too high, they may start to sprout or rot .
  3.  Storing onions at 40–50°F (4–10°C) is ideal. At these temperatures, they best maintain their characteristics.
  4. It’s also important to ensure proper ventilation to prevent molding and rotting. An open basket, bamboo steamer, mesh bag, netted bag or even pantyhose will do.
  5. Avoid leaving onions in plastic bags, as this may make them spoil quickly due to poor ventilation.
  6. Furthermore, darkness helps them last longer. The lack of sunlight reduces changes in temperature and humidity, two factors that can cause them to go bad faster.
To ensure that your onions last as long as possible, proper storage is essential.
Here are the best ways to store them at different processing stages.


Once an onion is peeled, it should be stored in the fridge to avoid bacterial contamination.
Place it in an airtight container and ensure your fridge is set to 40°F (4°C) or below.
Study revealed that peeled onions can last 10–14 days in the refrigerator.

2.Sliced, Cut or Diced

Sliced, cut or diced onions can be stored in the fridge for up to 10 days .
Simply wrap them tightly in plastic wrap or keep them in a resealable bag.
Alternatively, you can purchase pre-sliced onions at many supermarkets. Make sure to keep them refrigerated and use them before their expiration date.
For long-term use, sliced, cut or diced onions can be stored in the freezer for three to six months. They are best used in cooked dishes such as soups, stews and casseroles.


Cooked onions can be stored in the fridge for three to five days.
Simply place them in an airtight container or resealable bag within a few hours of cooking. If left outside for long periods, they may harbor bacteria.
Better yet, cooked onions can be stored in the freezer for up to three months.


Pickling is a low-cost way of extending the shelf life of your onions.
It involves storing them in a solution that hinders the growth of bacteria that typically spoil vegetables. Prepared this way, they may last up to six months.
To pickle onions, place peeled onions into a glass or ceramic jar filled with vinegar and a combination of salt, sugar and spices that suit your taste preferences.
Once opened, they are best kept in the refrigerator, which will help them last longer.


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