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How to identify whether there is methanol in homemade wine?
Self-made wine, as long as the fermentation temperature is appropriate and the temperature is normal, has no contact with iron containers and tools and is not infected. The fermented wine will not contain too many harmful substances, even if it does, it is far below the relevant standards, and it is no problem to drink.

If there is a serious infection during fermentation, it will contain harmful substances and can't be drunk any more.

To detect the methanol content in wine, you can take the sample to the local food and drug administration for inspection.