How to Turn Milk into Stone!

How to turn milk into a hard plastic nearly as strong as stone! All we need for this simple kitchen science experiment is milk, vinegar and a strainer. You can make all kinds of shapes and designs using this “plastic-like” material. In fact, this is the stuff they used before plastic was around!

Take 1 warm cup of milk and mix with 1 tablespoon of white vinegar. Basically, for every cup of milk you use, add 1 tablespoon of vinegar and you can make a much larger batch. Mix it together and strain out the curds that form. Once you dry it you can mold it into any shape you desire, but let it dry for a couple days first!

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34 responses to “How to Turn Milk into Stone!”

  1. sulphur the firehog Avatar

    can any kind of vinegar be used for this experiment

  2. Malene Lund Avatar

    What can I use to substitute the vinegar?

  3. Telecastvids Avatar

    Evan this substance be drilled into or sanded to make it a smooth finish after its hardened?

  4. Parmesean Avatar

    I can see why milk is good for your bones now

  5. Pragun Gupta Avatar

    that's cottage cheese

  6. Master vince 123 Avatar

    It really works I just did it

  7. BinaryFour Avatar

    this is very interesting …
    i have a big project , with like a 2.5mx2.5mx2m mold and milk plastic may be a nice cheap way to do it .
    the fact that there is a 2days dry time is also great because i will have the time to fill entierly the mold …

    thank you for sharing science .

  8. OW_it_broke Avatar

    Pfft I can just go to Hogwarts and take Transfiguration

  9. JC Melano Avatar

    OMG! This is the coolest sh*t ever.

  10. Emmett L. Brown Avatar

    You could also use this as the stones in fishtanks! Just color them with various paints! (Waterproof, of course.)

  11. Plantimaters Avatar


  12. eman coo coo le Avatar

    Thanks I'm in prison now I can make a shank

  13. Christine Maris Avatar

    Does it work with lemon

  14. Malcolm Harker Avatar

    warning dose not work on fat free milk

  15. B. Pyromane Avatar

    I'm thinking about using it to mold into .68 balls and you can get empty paintball shells from ebay and so I will try it out

  16. Shiva Bandaru Avatar

    can we use apple cider vinegar

  17. Roblox King - joshuakael Avatar

    is this healthier for the enviroment than plastic?

  18. Cailey The Pineapple Avatar

    Does it work with other types of vinigar

  19. Jewel Clone Avatar

    Does this work with eggnog?

  20. Titus Avatar

    He didn't even hit it hard or tried to brak it barehands. fucking fake af

  21. KI3RAN'S VIDEOS Avatar

    We did this at school!

  22. Ibrahim Fofana Avatar

    are we allowed to use apple cider vinger

  23. Avery Leigh Avatar

    does this work with almond milk? lol thats all I have

  24. Tristan Ruisi Avatar

    How come it did not work for me

  25. Sam Evans Avatar

    Will this work with apple cider vinegar

  26. Gerpar Avatar

    Looks more like bone

  27. Jai Saini Avatar

    Idiot…thats fully dry cheese..

  28. francesco tosi Avatar

    well thats not plastic is it?????

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