I know that non-Israel grown raw peanuts in their shell are considered plain "vegetables" / legumes and do not require kosher certification, as other untouched fresh fruit / veggies.

Shelled peanuts roasted in oil do require certification, as these go through some manufacturing processes where eitherthe oil itself may not be kosher or something unkosher may be in the processing plant that came in contact with the peanuts.

What about the roasting process if the peanuts are still in the shell? I heard that no oil is used in this process - they are heat roasted. I don't know if most places use a dedicated oven that just roasts peanuts. Furthemore, I had heard that since the shell is not eaten and nothing penetrates the shell, anyway, there wouldn't be a concern even if it came into contact with something non-kosher.

Can anyone verify this claim regarding unshelled roasted peanuts?

  • 1
    Considering that the shell often cracks and is porous, I doubt the assertion that "nothing penetrates the shell" is a factual one... Feb 26, 2016 at 20:17
  • @IsaacKotlicky I had thought of that, myself. However, there may be something regarding the roasting process itself where this wouldn't matter.
    – DanF
    Feb 26, 2016 at 20:18

3 Answers 3


Roasted nuts of any variety are permissible without a hecsher per Rabbi Yitzchak Abadi.


A. Are roasted pistachio nuts, or roasted nuts in general, with salt okay without a hechsher?

B. How about a trail mix made with assorted nuts, raisins, peanut oil and salt.


Reply of Yitzchak Abadi:

A. Yes

B. Yes

Source: http://kashrut.org/forum/viewpost.asp?mid=5922&highlight=

i would suggest that you search his website as you will find many more halachot and answers to questions that would be very valuable to your everyday life. In general, Kashrut agencies have something to gain by stating things need hecshers. So it might not always be the best policy to trust what they have to say regarding such issues in which they have a very real reason to be biased.

  • Re your last sentence - Is the site you listed a kashrut agency, itself? What makes them unbiased?
    – DanF
    Mar 29, 2016 at 13:00
  • 3
    @Aaron Modern manufacturing being complicated and using lots of different ingredients/techniques is not a new finding. It's just Metziut. Pretending that modern food manufacture techniques are as easy to verify the Kashrut of as ancient ones is just stupid. You can argue its still sufficiently verifiable, but it's definitely not just as easily verifiable. So the argument you presented doesn't follow.
    – Double AA
    Jul 27, 2016 at 20:15
  • 1
    @Aaron You're changing the point. Your first comment's argument is stupid. So I called you out on it. I'm not going to debate the actual issue here in the comments.
    – Double AA
    Jul 27, 2016 at 20:19
  • 1
    @Aaron Perhaps, but that's no excuse for you to present a stupid argument.
    – Double AA
    Jul 27, 2016 at 20:20
  • 2
    @Aaron No the job of a good rav is to paskin the opinions and teach you the opinions he paskins for you like, not just to make things easy for you. The most Meikil position is not always the way to Paskin. And yes you changed from complicated foods, to rabbis having bad incentives, back to complicated foods.
    – Double AA
    Jul 27, 2016 at 20:25

See the CRC statement on peanuts which omits dry roasted peanuts from its list of peanuts requiring certification.

http://www.crcweb.org/fruit%20&%20veg%20guide.php which states

Peanuts- A general inspection is needed to rule out obvious infestation. All canned, jarred or cooked, boiled or oil roasted nuts require a reliable hashgacha.

See also this link that confirms this https://books.google.com/books?id=l0GXha1h3eIC&pg=PA172&lpg=PA172&dq=dry+roasted+peanuts+hashgacha&source=bl&ots=ydT7Sx_0QS&sig=ADBhMU_B_DWncaAiRLB7ZnC-5pk&hl=en&sa=X&ved=0ahUKEwiW7vy6wpnLAhUhmYMKHTdcBx84HhDoAQgoMAI#v=onepage&q=dry%20roasted%20peanuts%20hashgacha&f=false

  • 1
    I'm not sure your conclusion is correct. The article has a separate listing for "nuts" amd "peanuts", and under "nuts", they state that dry roasted nuts DO require certification. Scientifically, peanuts are in their own category and are considered legumes, not nuts. However, since we commonly call them "nuts", it's unclear if when CRC says "nuts" it includes peanuts in that category. I assume that since they did make a separate listing for peanuts, the answer is that they are not included, but, I'll see if I can contact them to verify.
    – DanF
    Feb 28, 2016 at 3:25
  • Additionally, "cooked" in this context clearly seems to mean "roasted," since boiling and oil roasted are already covered (bishul and tigun vs. tzli). Is there a fourth way to "cook" peanuts that doesn't involve boiling or roasting in oil? Feb 29, 2016 at 20:37
  • @IsaacKotlicky Most nuts can be "dry roasted". I've done this with almonds and pecans. You put them in the oven with no oil and heat them for a while. I've never done this with peanuts, and I think trying to roast them while still in the shell is more complicated than that.
    – DanF
    Aug 17, 2018 at 19:50

In the southern states (of the USA), sometimes peanuts are roasted with some pork products to give them a certain taste (e.g., http://www.sarcasticcooking.com/2012/09/06/bacon-sage-roasted-peanuts/). I have seen packaged roasted peants sold at roadside stands with no indication of their contents. In short, there is a risk in just looking at the product or the ingredients. Anything cooked is a potential kashrut problem.

  • "I have seen packaged roasted peants [sic] sold at roadside stands with no indication of their contents. In short, there is a risk in just looking at the product or the ingredients. Anything cooked is a potential kashrut problem." What? That doesn't follow. The fact that some items don't list their ingredients does not indicate that there is risk by checking the lists on those that do.
    – Double AA
    Aug 26, 2016 at 15:30
  • @DoubleAA Not all ingredients have to be listed, only those above a certain percentage, as I understand it. Checking ingredients is a very incomplete approach to keeping kosher, but much better than nothing.
    – Yehuda W
    Aug 26, 2016 at 15:58
  • Whatever your reasoning is, you should include it in the post and not make arguments that don't follow. If that is your reason you should probably make sure you know what the laws actually are about ingredient listing and how law of Bittul can play into that. If you don't know what you're talking about, better not to say anything at all.
    – Double AA
    Aug 26, 2016 at 16:00
  • @DoubleAA I do not understand the reason for your strongly worded critique of what I wrote in my comments and the logic of your critique of my answer. But you have many more points than I on this SE, so perhaps you could explain these to me.
    – Yehuda W
    Aug 26, 2016 at 16:07
  • @Yehuda W Please provide a source for this notion that ingredients don't have to be listed. As far as I know, this is an outright falsehood.
    – Aaron
    Sep 25, 2016 at 19:48

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