Best Onion Keeper: How to Store Onions Without Smell in Your Fridge

Mark Cohen
Sep 1
3 min read

Few things can ruin a fridge faster than half a cut onion. Within hours, its strong sulfur compounds seep into everything—milk, fruit, even desserts. That’s why people look for the best onion keeper: a container that keeps onions fresh, crisp, and odor-free. While some products are designed specifically for onions, the smarter solution is a versatile, reusable container that does more than just mask smells.

Enter the Mazor Store Avocado Saver. Though created for avocados, this collapsible, vacuum-sealed container is also one of the most effective ways to store cut onions. It blocks odors, locks in freshness, and eliminates the need for wasteful plastic wrap or flimsy bags.

Why Do Onions Make Your Fridge Smell?

When you slice an onion, you break its cell walls, releasing sulfuric compounds. These volatile molecules quickly spread in the air—and in a confined space like your fridge, they travel onto nearby foods. That’s why strawberries might suddenly taste a little like onion if you don’t store cut produce properly.

The key to onion storage is containing those compounds so they can’t escape.

Common Onion Storage Methods (and Their Flaws)

Plastic Bags

Pros: Quick, cheap.
Cons: Rarely seal completely, flimsy, and single-use waste.

Glass Containers

Pros: Airtight if high quality.
Cons: Bulky, often oversized for half an onion.

Onion-Shaped Keepers

Pros: Fun design, purpose-built.
Cons: Only store onions; often don’t block smells fully.

Aluminum Foil or Plastic Wrap

Pros: Widely available.
Cons: Single-use, not eco-friendly, inconsistent seal.

What Makes the Best Onion Keeper?

According to kitchen experts, the ideal onion keeper should:

Block odors completely
Fit snugly around half an onion
Be reusable and eco-friendly
Save space in the fridge
Be versatile enough to use for other foods

This is where the Mazor Store Avocado Saver excels.

Why the Mazor Store Avocado Saver is Perfect for Onions

1. Vacuum-Effect Dome

The flexible dome presses down to create a vacuum-like seal. This keeps oxygen out, which reduces onion drying, and keeps sulfur compounds locked in.

2. Blocks Fridge Smells

Unlike foil or wrap, this container truly traps odors. That means no more onion-scented butter or milk.

3. Multi-Purpose Design

While it’s the ultimate avocado saver, it’s equally effective for:

Onions
Tomatoes
Lemons
Apples
Strawberries

That makes it more valuable than a single-use “onion pod.”

4. Collapsible & Space-Saving

Rigid glass containers eat fridge space. The Mazor Saver collapses flat (0.7 inches) when not in use, sliding easily into a drawer.

5. Eco-Friendly & Durable

Made from BPA-free silicone, it’s reusable, dishwasher-safe, and designed to last. Each use replaces disposable wraps or bags.

How to Store a Cut Onion the Right Way

Peel only what you need.
Place the unused half, cut-side down, into the Mazor Store Avocado Saver.
Press the dome lid down to create a vacuum effect.
Store in the fridge, ideally in the crisper drawer.
When ready to use, simply wash the container in the dishwasher or rinse quickly.

Your onion will stay crisp, fresh, and—most importantly—contained.

Customer Experiences

⭐️⭐️⭐️⭐️⭐️"I bought it for avocados but quickly realized it’s the best onion keeper too. My fridge no longer smells like onion soup!"

⭐️⭐️⭐️⭐️⭐️"Works for onions, tomatoes, lemons—basically everything I used to wrap in plastic. Love that it folds flat when I’m not using it."

⭐️⭐️⭐️⭐️⭐️"Finally, an eco-friendly solution. No more wasting foil or bags just to store half an onion."

FAQ

Q1: What’s the best way to store a cut onion? Use a sealed, odor-blocking container like the Mazor Store Avocado Saver, which prevents smells from spreading.

Q2: How long does a cut onion last in the fridge?With proper storage, up to 7 days. Using a vacuum-sealed container helps maintain freshness and crispness.

Q3: Can I use the Mazor Saver for other produce? Yes — it also stores avocados, tomatoes, lemons, apples, and more.

Q4: Is it dishwasher safe? Yes, it’s made of BPA-free silicone and cleans easily.

Q5: Why is it better than onion-shaped containers? It’s more versatile, creates a tighter seal, and folds flat when not in use.

Final Thoughts

The best onion keeper isn’t just about storage—it’s about keeping your fridge fresh, your food uncontaminated, and your kitchen eco-friendly. While onion-specific pods exist, they’re limited in use and often don’t block smells completely.

The Mazor Store Avocado Saver solves multiple problems at once: it seals in freshness, blocks odors, saves space, and reduces plastic waste. Whether it’s half an avocado or half an onion, this container does it all.

Say goodbye to smelly fridges. With the Mazor Store Avocado Saver, your onions (and your kitchen) stay fresh and odor-free. 👉 Order yours on Amazon.