15 Food Items That Go Bad Faster When Stored in Plastic

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It’s easy to reach for plastic bags or containers when putting food away. They’re convenient, stackable, and feel like the quickest way to keep things fresh. But in many cases, plastic does the opposite.

Plastic traps moisture and restricts airflow, creating the perfect environment for mold, sogginess, and faster spoilage. Some foods actually last longer when they can breathe a little.

Here are everyday foods that tend to go bad faster when stored in plastic.

Bread

Fresh bread doesn’t stay fresh for long to begin with, but plastic can accelerate its decline. When sealed in plastic, moisture builds up quickly, creating the perfect environment for mold. It can also leave your loaf soft in all the wrong ways.

If you want your bread to last a bit longer, store it in a paper bag or wrap it in a clean kitchen towel. This allows some airflow while still keeping it from drying out too quickly.

Related: How to Keep Bread From Getting Moldy Too Quickly

Cheese

Cheese needs a balance of moisture and airflow. When it’s tightly wrapped in plastic, it can’t breathe, causing it to “sweat” and spoil faster. The texture often turns sticky, and the flavor can dull.

A better option is to wrap cheese in parchment or wax paper, then place it loosely in a container. This helps it stay fresh without trapping excess moisture.

Mushrooms

Mushrooms are especially sensitive to moisture. When kept in plastic, they absorb condensation and quickly become slimy.

Instead, store mushrooms in a paper bag in the fridge. The paper absorbs excess moisture and keeps them firm much longer.

Lettuce

Leafy greens are among the first to suffer from plastic. Trapped moisture causes leaves to wilt, turn soggy, and eventually become slimy.

For better results, wrap lettuce in a paper towel and place it in a loosely closed container or the crisper drawer. The paper towel helps regulate moisture and keeps leaves crisp.

Onions

Onions need airflow to stay dry and firm. In plastic, moisture builds up quickly, leading to soft spots, mold, or early sprouting. Store onions in a mesh bag, basket, or any well-ventilated container in a cool, dry place.

Garlic

Like onions, garlic doesn’t do well in sealed plastic. Trapped humidity causes cloves to become soft, moldy, or even sprout.

Keep garlic in a breathable container such as a wire basket or a garlic keeper where air can circulate freely.

Potatoes

Plastic bags trap moisture and speed up spoilage in potatoes. This leads to sprouting, softening, and an overall shorter shelf life. A paper bag or burlap sack in a cool, dark place works much better for keeping potatoes fresh.

Berries

Berries are delicate and prone to mold. When stored in plastic, condensation builds up quickly, causing them to spoil almost overnight.

To extend their life, keep berries in a shallow container lined with a paper towel to absorb excess moisture.

Cucumbers

Cucumbers stored in plastic tend to become soft and slimy faster than expected. The trapped moisture breaks down their crisp texture.

Wrap cucumbers in a paper towel and store them in the fridge’s crisper drawer for better results.

Tomatoes

Tomatoes release natural gases as they ripen. When sealed in plastic, those gases are trapped, accelerating the ripening process and leading to faster spoilage.

Leave tomatoes on the counter at room temperature to ripen naturally.

Bananas

Bananas already ripen quickly, and plastic only speeds things up. Trapped gases and moisture cause them to turn brown and mushy sooner.

Keep bananas out in the open on the counter or hanging to slow down the process.

Related: How to Stop Bananas From Turning Brown So Quickly

Fresh Herbs

Herbs like cilantro and parsley quickly wilt in plastic due to excess moisture. Treat them like a bouquet instead: trim the stems, place them in a glass of water, and loosely cover them. This keeps them fresh and vibrant longer.

Apples

Apples may seem sturdy, but they don’t benefit from being sealed in plastic. Without airflow, they can lose their crisp texture and spoil faster.

Store apples in the fridge or on the counter without sealing them in plastic for the best shelf life.

Peppers

Peppers soften and wrinkle quickly when stored in plastic due to trapped moisture. They’ll last longer in the crisper drawer, where airflow helps maintain their firmness.

Avocados

Plastic can speed up the ripening process of avocados, often pushing them from perfectly ripe to overripe too quickly. Let avocados ripen on the counter, then move them to the fridge without wrapping them tightly in plastic.

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