How to Clean Fruit and Vegetables | America's Test Kitchen (2024)

Science

A University of Massachusetts study found that soaking produce in baking soda solution is effective at removing common pesticides. We conducted our own experiment to see how it compares to other common methods.

How to Clean Fruit and Vegetables | America's Test Kitchen (1)By

Published May 25, 2023.

How to Clean Fruit and Vegetables | America's Test Kitchen (2)

We all know pesticides can remain on conventionally grown produce. For those of us looking to minimize exposure to such chemicals, is there a reliable way to remove them from fruits and vegetables?

A 2017 study conducted at the University of Massachusetts found that washing produce in a baking soda solution can make a real difference: just a 15-minute soak in a 1 percent baking soda solution, followed by a rinse in clean water, completely removed two common pesticides from the surface of apples. (Some pesticide remained inside the peel; more on that below.)

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This sounded like an easy and promising method for at least getting rid of pesticides on the outside of produce, but we wanted to run our own tests, comparing a baking soda wash to other common methods for cleaning produce.

Our Cleaning Tests: Baking Soda vs. Vinegar vs. Tap Water

We purchased pesticide detection cards that can ascertain the presence of two types of commonly used pesticides—carbamates and organophosphates.

A detection card is dipped into a solution in which the fruit has been soaked, and then pressed against a second card. If that second card stays white, it indicates a high concentration of pesticide residue. But if the disk turns blue, this indicates very little to no residue.

For our tests, we chose grapes, which have a lot surface area for harboringpesticides.

First, we used the cards to confirm that there were indeed pesticides on the surface of then grapes. Then we conducted the following tests:

  • Soaking in baking soda solution: We submerged some of the grapes in 2 teaspoons baking soda plus 1 quart water (roughly the same formula used in the original study) for 15 minutes.
  • Swirling in baking soda solution: We swirled another batch in the same solution for 30 seconds.
  • Soaking in a vinegar solution: We misted more grapes in a solution made up of 3 parts water to 1 part vinegar.
  • Rinsing under cold running water

We rinsed the grapes in water after treating them with each of the solutions, and dried them all before checking for pesticide residue with the detection cards.

The Winner: Baking Soda

Only the test cards applied to grapes treated with baking soda solution turned blue, indicating that it was effective at removing pesticides.

How Does Baking Soda Remove Pesticides?

Because most pesticides aren’t stable at an alkaline pH, soaking them in a baking soda solution can break down their compounds, and together with a rinse under tap water, can help to wash them away.

Note: The baking soda solution will remove only certain classes of pesticides, and only from the produce’s surface. Spray pesticides that are designed to be absorbed cannot be rinsed away; neither can those that are applied to a plant’s roots. (In the University of Massachusetts study, one of the pesticides applied to the apples, thiabendazole, was designed to be absorbed by fruit flesh, and 20 percent of it remained in the peel after the baking soda soak. In addition, 4.4 percent of a second pesticide, phosmet, which is designed to stay on the surface, also penetrated the peel and remained after the soak.) But since baking soda does such a good job of removing some common types of pesticides from the outside of produce, and because the method is fast and easy, we’re still inclined to use it.

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How to Wash Fruit and Vegetables with Baking Soda

Swirl produce in a solution of 2 teaspoons baking soda per 1 quart water for 30 seconds (the produce should be submerged by at least 1 inch of liquid), and then rinse under cold running water.

How to Clean Fruit and Vegetables | America's Test Kitchen (2024)

FAQs

How to Clean Fruit and Vegetables | America's Test Kitchen? ›

solution (1 part vinegar, 3 parts water). Rinse. This. removes 98% of bacteria.

How to wash fruit in America's test kitchen? ›

Here's how. Fill a spray bottle with 3 parts water and 1 part white vinegar. Spray the produce, then rinse with tap water. Note: This method can also be used to wash produce with inedible rinds and peels, such as melons, since cutting into a contaminated peel can drag pathogens into the flesh.

Is it better to wash fruit with vinegar or baking soda? ›

Use apple cider or white vinegar for a 10-15 minute soak. Then rinse the fruit well. The benefit of baking soda (besides not having any kind of vinegar smell or taste lingering) is that it removes pesticides.

What is the best way to clean fruit and vegetables? ›

Add your fresh fruits and veggies. to a bowl of cold water. and sprinkle 2 teaspoons of baking soda on top. Or use one part white vinegar to 3 parts water. Let it all soak for 10 to 15 minutes, then drain and rinse well.

Does baking soda remove pesticides from strawberries? ›

Because most pesticides aren't stable at an alkaline pH, soaking them in a baking soda solution can break down their compounds, and together with a rinse under tap water, can help to wash them away. Note: The baking soda solution will remove only certain classes of pesticides, and only from the produce's surface.

How to clean blueberries and strawberries with vinegar? ›

In a large bowl, mix together 3 cups water and 1 cup white vinegar. Immerse your berries in the water and gently agitate them. Then let the berries soak for 5-10 minutes. Drain the berries in a colander in the sink, rinsing them with a light spray of running water.

How to clean strawberries before eating them? ›

Step 1: Mix one teaspoon of baking soda with four cups of water and stir until dissolved. Step 2: Add the strawberries to the mixture and toss them with clean hands. Step 3: Let the strawberries soak in the mixture for 10 to 15 minutes. Step 4: Rinse the berries clean and then they're ready to eat.

How to remove all pesticides from fruits and vegetables? ›

Holding the fruit or vegetable under flowing water removes more than dunking the produce. Peeling or scrubbing produce like potatoes with a stiff clean brush or rubbing soft items like peaches while holding them under running water works best to remove residues.

How to wash blueberries to remove pesticides? ›

Put cold water into a bowl with a little bit of white vinegar (I'm using a cap-full) 2. Add your berries to the vinegar/water solution and let sit for about 15 minutes. 3. Give your berries a quick rinse and lay them out on a towel to dry.

Is baking soda good for washing fruits and vegetables? ›

This means “sturdy items with smooth skin will hold up the best (apples, pears, some melons and squash, etc.),” says House. Beyond that, studies have shown that while washing produce in a baking soda solution can reduce pesticide residues by 66.7–98.9%, washing in tap water alone can reduce by 26.7–62.9%.

How to wash fruits to remove pesticides? ›

Hold the fruit or vegetable under flowing water in a strainer. This removes more pesticide than dunking the produce. The FDA does not recommend washing fruits and vegetables with soap, detergent, or commercial produce wash. They have not been proven to be any more effective than water alone.

Do you need to wash packaged fruit? ›

"You want to make sure that you wash them well before you cut into them. Because, if they are not washed, you'll be introducing the bacteria that are on the outside of them into the fruit or vegetable." If your produce is packaged, carefully read the label to see if it needs a rinse.

Are you supposed to wash organic fruit? ›

Rinsing removes debris and dirt and any microbial contaminants they may contain. Washing also helps remove some of the surface pesticides that may be present, though guidelines are generally the same for organic produce as for conventional produce.

Is it safe to wash fruit with vinegar? ›

But for fruits like apples, pears, peaches and plums, a vinegar solution is an easy way to make sure all pesticides are removed from the skins. Additionally, smaller, loose fruit like berries and cherries can also be washed with vinegar. They're easy to submerge in water and can be quickly strained when done.

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