✅ 1. Use an Airtight Container (Best Option)
- Why: It seals in moisture and odor, while protecting the onion from cross-contamination.
- How: Place the cut side down in a small glass or plastic container with a lid. Store in the fridge.
✅ 2. Wrap in Plastic Wrap or Beeswax Wrap
- This helps limit air exposure and odor spread.
- Better than a paper towel, which absorbs moisture and can promote bacterial growth.
✅ 3. Use a Reusable Silicone Food Cover
- These flexible lids seal over the cut edge of an onion.
- They’re reusable, eco-friendly, and keep the onion fresh for longer.
❌ Avoid These Common Mistakes
- No paper towels alone: They don’t provide a proper seal and can harbor moisture.
- Don’t store onions uncovered: They’ll dry out quickly and stink up your fridge.
- Avoid foil: It can react with onion sulfur compounds, especially with aluminum.
🧊 Where to Store It?
- Always keep the cut onion in the vegetable crisper drawer or coldest part of your fridge.
- Use within 7–10 days for best quality and food safety.
Bonus Tip: Can You Freeze Leftover Onion?
Yes! Chop it, flash-freeze it on a tray, then store in a freezer bag for up to 3 months. Great for cooking (not raw use).
Summary:
| Method | Freshness | Odor Control | Safety |
|---|---|---|---|
| Airtight container | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ✅✅✅ |
| Beeswax/silicone wrap | ⭐⭐⭐⭐ | ⭐⭐⭐ | ✅✅ |
| Paper towel only | ⭐⭐ | ⭐ | ❌ |
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