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In page Moonshine:

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  • Grain starches: Methanol is not produced in toxic amounts by fermentation of sugars from grain starches.[citation needed]
  • Methanol is produced in the fermentation of fruits via the action of pectin methylesterase, while of regulatory concern this does not typically exceed toxic levels and poisonings typically occur from methanol addition [1][2] (e.g. as a lacing agent).