I wanted to make sweet potato fries but it was very disappointing and not crunchy at all.

I put the first batch in a medium-heat oil and left them for a while, they got out all soggy. I turned up the heat for the second batch, it got a bit better but still way below my crunch expectations. I even tried to put the first batch back in the hot oil, remembering that good Belgian potato fries should go in the oil twice, but I just managed to burn them.

Do you know what I did wrong? Is it because of an excess of humidity? They were pretty dry already when I put them in the oil.

I've read that they should be coated in flour before, does that work? I don't see how it would stick well to the sweet potatoes, aren't them too dry for that?

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    We have a duplicate question on this, though it doesn't provide a satisfactory answer. In my opinion, you can't make sweet potato fries crunchy unless you coat them with a batter or crust of some sort. They don't behave the same as regular white potatoes.
    – moscafj
    Jan 4, 2021 at 20:28
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    Welcome to SA, Sarah! I totally agree with moscafj, here, but not posting an answer since I don't have a recipe I've tested.
    – FuzzyChef
    Jan 4, 2021 at 21:27
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    FWIW, we have three other questions just like this one, all without good/accepted answers. As such, please do NOT close Sarah's question ... calling it a duplicate of a question without an answer isn't helpful.
    – FuzzyChef
    Jan 4, 2021 at 21:28
  • @FuzzyChef if we have three old questions, it would be best to close two of them as a duplicate of the third. Can you please link the two others in a comment to the best or oldest question so we can close the proliferation? And I get why you call it "not helpful" but having multiple open questions without an answer is even less helpful - longer answer on your meta question.
    – rumtscho
    Jan 4, 2021 at 22:41
  • Yes I saw the other post but it was old and about using a different type of fryer, so I just wanted to check if users since then might have an answer that would be relevant to me. Sorry if the multiple questions made it more difficult @rumtscho, I'm a new user :) Next time I'll phrase my post differently to have only one question.
    – Sarah BDnO
    Jan 5, 2021 at 9:56