What does OiO when Buying Grains mean?

Discussion in 'General Brewing Discussions' started by McAvinbrew, Mar 29, 2016.

  1. McAvinbrew

    McAvinbrew New Member

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    As the title suggests Im buying some grains and some of them are marked OiO. Ive had a quick look and cant find out what it means. Im hoping some of you more experienced folk can cast a little light on my ignorance. :)

    Thanks guys.
     
  2. jeffpn

    jeffpn Well-Known Member

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  3. McAvinbrew

    McAvinbrew New Member

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