Which food item has the longest shelf life for emergency supplies?

Wheat is known for its exceptionally long shelf life, especially when stored in a cool, dry environment and kept airtight. Whole wheat grains can last for decades if properly stored, largely due to their low moisture content and natural protective oils. While the shelf life of wheat may depend on specific storage methods and conditions, it often surpasses that of many other food items.

Frozen peas and other frozen vegetables generally require constant refrigeration to maintain their quality and safety, making them less suitable for long-term emergency supplies as they have a limited shelf life once thawed.

Pasta can also have a long shelf life, often ranging from 5 to 10 years if stored in a sealed container in a cool, dry location, but this duration is typically shorter than that of whole wheat grains under optimal conditions.

Canned goods are notable for their durability, with the potential to last several years due to their sealed nature. However, they typically have an expiration date and may degrade in quality over time.

In terms of longevity, unprocessed wheat stands out as the most reliable option for emergency supplies, making it the ideal choice among the listed food items.