this post was submitted on 27 Aug 2024
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You Should Know

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Why you should know:

Arsenic is a carcinogen and has various other negative health effects; enough to warrant exposure limits in various jurisdictions. A five minute boil-and-discard step before cooking is a simple way to reduce your exposure, especially if you eat a lot of rice.

Details are in the study, linked in the title of this post. Here's a diagram from the abstract:

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[–] [email protected] 10 points 3 months ago* (last edited 3 months ago) (1 children)

I’m asian and grew up in Asia cooking rice without a rice cooker. This is how we do it:

  • 1:2 rice to water ratio
  • Wash rice
  • Put rice and water in a sauce pan(?) or whataver you call that pan with deep sides.
  • Turn on stove to high heat until water boils (This is the initial 5-8 mins)
  • Once boiling, turn down heat to low and simmer for 40 mins (for brown rice. White rice is 20-25, broken rice is 12-15)

If I was to boil the rice for 5 mins and throw the water out, that means I need to boil water first (5-8 mins), throw in the rice and wait 5 minutes, then throw out the water. Only then will I do the above steps. The fresh water needs to boil again (5-8 mins) before I simmer for 40 mins.

Good point on heating the new batch of water while doing the initial boil. I can’t say I’ve ever cooked rice by throwing it into already boiling water though, so we’ll see how it turns out.

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago)

I can’t say I’ve ever cooked rice by throwing it into already boiling water though,

Do you mean when replacing the parboil water? At that point, the rice would already have been brought to a boil gradually. Discarding the parboil water and pouring in fresh boiling water wouldn't be like throwing dry rice into a boiling saucepan.

Or are you thinking of changing your process, by no longer bringing the water to a boil with the rice already in it, but instead waiting to add the rice until after the parboil water has reached a full boil? I realize that's what the infographic shows, but I don't think it's necessary to do it that way. If anything, I would expect your way (bring rice & water to a boil together) to pull out more arsenic.