Potatoes are a kitchen staple, versatile and hearty, capable of being turned into countless dishes. However, improper storage can lead to sprouting, wrinkling, or even rotting.
To prevent waste and ensure fresh potatoes are always on hand, we tested various storage methods, discovering the best ways to keep them firm and delicious.
Optimal Conditions to Store Potatoes
Before testing, numerous agricultural guides were consulted, revealing that potatoes can last up to a year when kept in ideal conditions. However, at room temperature, they spoil within weeks. Ideal storage is a dark, cool (45°F to 55°F), and well-ventilated place, but modern urban dwellings often lack such spaces.
Choosing Potatoes to Test
The shelf life of potatoes varies by type. Russet potatoes can last three to five months, while Yukon Gold potatoes last two to three months. For this experiment, 10-pound bags of russet and Yukon Gold potatoes, devoid of cracks or bruises, were selected to ensure accurate results.
Finding the Best Container for Storing Potatoes
The right containers allow air circulation and maintain humidity. We tested paper bags, mesh cotton bags, perforated plastic bags, lidded cardboard boxes, metal wire baskets, and plastic mixing bowls. They were stored in both a temperature-controlled refrigerator drawer and a room-temperature pantry to evaluate their effectiveness. Both environments were tested to simulate common storage options available to most consumers.
The results showed that in the refrigerator drawer set to 50°F and 65% humidity, all potatoes remained firm. However, those in a mesh cotton bag and plastic mixing bowl were slightly softer. The conclusion was that high-tech cooler drawers are impractical for most, despite their effectiveness.
In the kitchen pantry test at room temperature (65°F to 77°F with 70 to 95% humidity), paper bags and cardboard boxes retained too much moisture, leading to mold. The perforated plastic bag and metal wire basket provided the best ventilation, keeping the potatoes fresh.
Storing Potatoes Alongside Onions
Storing onions with potatoes is commonly practiced but not recommended. Onions emit ethylene gas, which can deteriorate potatoes. The test confirmed this, as potatoes stored next to onions shriveled and grew moldy. In taste tests, potatoes stored near onions had off flavors, reinforcing the advice to store them separately.
Low levels of ethylene cause mild shriveling, while high levels lead to sprouting. Conventional potatoes treated with sprout inhibitors fared better, but still developed undesirable flavors when stored near onions. Avoiding ethylene-producing foods like apples and bananas is advised to maintain potato freshness.
How Refrigeration Affects Potato Storage
Storage temperatures below 38°F cause sugar buildup in potatoes, affecting their taste and cooking qualities. A week-long test at 34°F in a refrigerator showed that potatoes browned too quickly when fried and tasted bitter. While appearance changes were minimal, the flavor was negatively impacted.
Steamed potatoes from the refrigerator had a slightly bitter taste, missing the earthy flavor typical of fresh potatoes. Keeping potatoes at higher temperatures within the recommended range ensures better taste and texture.
The Takeaway: How to Store Potatoes So They’ll Last
To maintain fresh, firm potatoes, follow these steps: choose quality, unblemished potatoes, avoid washing before storing, keep them dry, and store in a cool, dark place. Use breathable storage containers like mesh plastic bags or wire baskets. Regularly inspect for spoilage and store away from ethylene-producing foods.
By adhering to these guidelines, potatoes can stay fresh for weeks, ready for use in various dishes.
Proper storage of potatoes ensures they remain fresh and ready for use, minimizing waste and disappointment.
By following these tested methods, you can extend the shelf life of your potatoes, making them a reliable staple in your kitchen.
Source: Seriouseats