Storing onions and garlic properly can greatly extend their shelf life and maintain their quality for up to six months. To achieve this, it’s important to understand the ideal conditions for these alliums.

The best place to store both onions and garlic is in a cool, dry, and well-ventilated area. A pantry, cellar, or a dedicated storage rack in a cool room are excellent options. The ideal temperature range for storing onions and garlic is between 60°F and 65°F (15°C-18°C). It’s crucial to keep them out of direct sunlight as it can cause them to spoil more rapidly.

Separate the onions and garlic from other fruits and vegetables. Some fruits like apples or bananas release ethylene gas which can speed up the ripening process, leading to quicker spoilage.

For optimum longevity, consider storing onions and garlic in mesh bags, bamboo steamer baskets, or even pantyhose with knots tied between each onion or garlic bulb. These methods allow for adequate air circulation around each piece, reducing moisture accumulation which can lead to mold growth.

It’s also effective to store garlic as individual unpeeled cloves in an open container where there’s plenty of dry air circulating. For onions, keeping them intact and unpeeled is key; once an onion is cut into, it should be used within a few days.

To further extend the shelf life up to six months or potentially even longer, some people opt for preservation methods such as pickling or freezing diced onions. However, when frozen, the texture of raw onions changes, making them suitable only for cooking purposes after thawing.

Lastly, do avoid storing them near potatoes; while they might seem like great companions because similar storage conditions apply, potatoes release moisture and gases that can cause onions to decay faster.

By adhering to these storage guidelines, you can ensure your onions and garlic stay fresh and flavorful for as long as possible.