Can You Slice Tomatoes with a Mandoline Slicer? Yes, Here's How

Yes, a mandoline can slice tomatoes, but firm or slightly underripe tomatoes work best.

Use a straight blade and a medium thickness setting for clean, even slices.
Always use the hand guard or a cut-resistant glove to prevent injuries.
For soft or ripe tomatoes, chill them first and use a thicker setting to avoid mush.

How to slice tomatoes with a mandoline slicer

Start with a firm tomato, preferably Roma or a slightly underripe beefsteak. Place the tomato on the mandoline platform and hold it firmly with the hand guard. Set the thickness dial to about 1/8 inch or 3 mm. Slide the tomato across the blade in one smooth, steady motion. Apply even pressure, but do not force it. For the last slice, use the pusher to protect your fingers. Clean the blade immediately after slicing to prevent corrosion from tomato acid.

Which mandoline blade is best for tomatoes?

A straight or v-shaped blade gives clean, even slices. Avoid crinkle-cut blades, as they tear the tomato skin and flesh. Some mandolines come with interchangeable blades; choose the straight one. A sharp blade is crucial, as a dull blade will crush the tomato. Stainless steel blades resist rust and stay sharp longer. Ceramic blades are also sharp but more brittle. Check the manufacturer's instructions for blade compatibility.

Can you slice soft or ripe tomatoes on a mandoline?

Soft, fully ripe tomatoes are more challenging. They tend to squish under pressure and may not slice cleanly. If you must slice ripe tomatoes, chill them in the fridge for 30 minutes first. Use a thicker setting, around 1/4 inch, to reduce crushing. Alternatively, use a serrated knife for very ripe tomatoes. A mandoline is best for firm or slightly underripe tomatoes. Overripe tomatoes are better suited for sauces or soups.

Mandoline safety tips for slicing tomatoes

Always use the included hand guard or cut-resistant glove. Tomatoes are slippery, so dry them with a paper towel before slicing. Place a damp towel under the mandoline to prevent it from sliding. Keep your fingers away from the blade at all times. Never slice a tomato without the guard, even if you are experienced. Clean the blade carefully with a brush, not your fingers. Store the mandoline with the blade locked or covered.

Best mandoline slicers for tomatoes in 2025

The Benriner Japanese Mandoline Slicer is a top choice for its ultra-sharp blade and adjustable thickness. The OXO Good Grips V-Blade Mandoline Slicer offers a comfortable handle and a safety guard. The Mueller Austria Mandoline Slicer comes with multiple blades and a hand guard. The KitchenAid Adjustable Hand Held Slicer is compact and easy to store. For heavy-duty use, the Paderno World Cuisine Mandoline Slicer has a large cutting surface. Each model handles tomatoes well if used correctly.

Common questions

Can you use a mandoline to slice cherry tomatoes?

Yes, but cherry tomatoes are small and can be tricky. Use the hand guard to hold them securely. Slice them in half or use a thicker setting. Some mandolines have a small food holder for this purpose.

What thickness should I set for tomato slices?

For sandwiches, set it to about 1/8 inch. For salads, a thinner slice of 1/16 inch works. For grilling, go thicker at 1/4 inch. Adjust based on your recipe.

Is a mandoline better than a knife for slicing tomatoes?

A mandoline gives uniform slices faster than a knife. However, a very sharp chef's knife offers more control. For large quantities, a mandoline is more efficient. For a single tomato, a knife may be easier.

Can you slice tomatoes with a mandoline without a guard?

Technically yes, but it is very dangerous. Tomatoes are slippery and can cause your fingers to slip. Always use the guard or a cut-resistant glove. Safety should be your top priority.

Why do my tomato slices come out mushy on a mandoline?

Mushy slices usually mean the tomato is too ripe or the blade is dull. Use a firmer tomato and ensure the blade is sharp. Also, avoid pressing down too hard. A gentle, steady motion works best.

Can you slice tomatoes with a mandoline for canning?

Yes, for canning you want uniform slices. Use a firm tomato and a thickness of about 1/4 inch. Blanch and peel the tomatoes first if you prefer. A mandoline speeds up the process.

How do you clean a mandoline after slicing tomatoes?

Rinse the blade and platform under warm water immediately. Use a brush to remove seeds and pulp. Do not put it in the dishwasher unless the manufacturer says it is safe. Dry it thoroughly to prevent rust.

Can you slice tomatoes with a mandoline if they are frozen?

No, frozen tomatoes are too hard and will damage the blade. Thaw them first and drain excess liquid. Then slice them as you would fresh tomatoes. Frozen tomatoes are best for cooking, not slicing.