First of all, take 1 cup of milk and warm it in the microwave for about 1.5 minutes (you want it hot, but not boiling)
Next, stir in 4 tablespoons of vinegar.
The milk will start to clump as the acid in the vinegar breaks down the protein in the milk. Stir for about 1 minute
Then, strain the milk through a strainer. All the clumps will stay in the strainer and really push on them to get all the liquid out.
Finally, transfer it to some paper towels and continue to press all the liquid out of the plastic milk. You can then shape it and colour it if you wish.
You can use a cookie cutter and then add a few drops of food colouring or you can leave them white too.
Set them aside to dry for a good long while – about 2 nights – and then they were ready! Hard as could be and ready to be hung up in a window, on a door, or used to decorate a Christmas tree! (You know, if it wasn’t June!)