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[–] 11 points 5 months ago (6 children)

put lemon juice in shiny metal you found in cave put lot of it 5 lemons juice take shiny metal string attach to eachother make big big fire

wash hand in fire boiled river water and do surgery with washed hand and washed utensil

you know how make beer? ok now put hands and tool in beer when surgery

dirty hand cause death .

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  • [–] 5 points 5 months ago (2 children)

    Lemon juice will be a problem. You'll have to make lemons first.

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  • [–] 8 points 5 months ago (2 children)

    Alcohol in beer isn't strong enough to disinfect. Don't dip your surgical tool is beer.

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  • [–] -2 points 5 months ago (1 child)

    make very strong beer. ferment longer

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  • [–] 4 points 5 months ago

    I don't think you can do it with beer. The yeast used dies from the alcohol they produce. I'm sure there is nasty bacteria that can survive in concentrations of alcohol above what yeast can.

    You could make vodka, or moonshine, but that requires distillation and is a more advanced tech.

    Soap (made from animal fat) and water should do fine for your hands. Use a fire to disinfect any tools before you use them (let them cool off first). That should majorly help with survival.

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