Mystery Solved! What That Odd Kitchen Gadget From the Thrift Store Actually Is

🥒 What You Can Slice With It

An onion slicer works best with firm vegetables and fruits, including:

  • Onions (yellow, red, or white)

  • Potatoes (for chips or scalloped dishes)

  • Cucumbers (for salads or pickles)

  • Zucchini or summer squash

  • Apples (for pies or snacks)

  • Carrots (if they aren’t too thick)

⚠️ Avoid using it with:

  • Soft fruits like bananas or tomatoes

  • Very hard roots such as sweet potatoes or beets

  • Foods with tough cores


How to Use It Safely and Effectively

Follow these simple steps:

  1. Place the slicer on a stable surface (a non-slip mat helps).

  2. Trim the ends of the vegetable so it sits flat.

  3. Press firmly and evenly through the blades using a pusher or the heel of your hand.

  4. Rinse the slicer immediately after use, as food can get stuck between the blades.

  5. Dry it thoroughly to prevent rust (metal models) or odor buildup (plastic models).

💡 Pro tip: Sprinkle sliced onions with a pinch of salt to soften their sharp flavor and bring out natural sweetness.


♻️ Found One at a Thrift Store? Clean It First

If you bought your slicer secondhand, make sure to clean it thoroughly.

Steps to sanitize it:

  • Soak it in warm, soapy water

  • Use an old toothbrush to scrub between the blades

  • Sanitize with vinegar or a diluted bleach solution

  • Check for rust or dull blades

If the blades are damaged or unsafe, it’s best to recycle the tool safely.


Onion Slicer vs. Mandoline vs. Knife