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Livestrong:

You'll remove most of the wax and residue by rinsing the apple under cool water

Is this true?

Ideally, I'd like for some actual scientific research that compares various methods for washing/cleaning apples.

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    You trimmed down the advice: "You'll remove most of the wax and residue by rinsing the apple under cool water and drying it with a clean towel or paper towel. If needed, rub it gently with a soft cloth or vegetable brush to scrub away the wax." I suspect it's like washing your hands, where water temperature isn't as significant as the rubbing
    – Joe
    Nov 17, 2020 at 3:16
  • Related, and maybe should be considered duplicate: cooking.stackexchange.com/questions/32162, cooking.stackexchange.com/questions/65274, cooking.stackexchange.com/questions/25217
    – rumtscho
    Nov 17, 2020 at 9:42
  • I agree with Joe, the only thing removing wax with this method is the advice to rub which you omitted. Wax isn't water soluble so cold water will have no effect but hot water would melt it.
    – Gemma
    Nov 22, 2020 at 17:59

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