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Fire brick approved for food contact? - Forno Bravo Forum: The Wood-Fired Oven Community

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New Forno Bravo Forum Feature

Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Fire brick approved for food contact?

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  • Fire brick approved for food contact?

    I'm just starting to research WFO construction. I've looked some on the Web in general and this forum in particular, but as yet I haven't found anything regarding fire brick use and food contact. Here in the US, are there products such as FDA-approved fire bricks for baking applications? Or is it apparent in the brick manufacturing process that anything toxic is volatilized or perhaps "locked" into the brick? Thanks for the help.

    Great site!

  • #2
    Re: Fire brick approved for food contact?

    Fire bricks are not considered food safe because they are porous. How any bugs could survive 400 C is beyond me, but the regulators have different criteria. A wooden oven door is also not in the food safe category because wood is porous. Maybe we need to be builing our ovens totally from stainless steel so we can satisfy the regulations.
    Kindled with zeal and fired with passion.

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    • #3
      Re: Fire brick approved for food contact?

      Firebricks consist of silica and alumina. The clay (silica) part is a naturally mined substance, and thus may contain other trace elements. The alumina part is a by-product of aluminum production, and is mostly pure.

      If you are in a situation where you need to prove to the health department that your oven is 100% safe, you may have to get a UL approved modular oven like Forno Bravo sells. For home baking, I think, as David S. says, that they are entirely safe.
      My geodesic oven project: part 1, part 2

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