How can i make white paint without, plaster of paris?

Possible solutions are white chalkdust and some water in a 3:2 ratio, (that's three parts dust and two parts water.) lime and water, soy powder and water, acrylic undercoat from the hardware store, matte medium or gelatin. all of these are powders of some sorts, i think the best ratio is the 3:2 mentioned earlier.

hope i helped!

To make your own paint, mix 1 cup of warm water and 12 ounces each of white flour and table salt until you have a smooth liquid. Then, separate the mixture into different containers, and mix in 2-3 drops of food coloring to each container until it's a solid color.

Explanation:

b. an anonymous prisoner from the warsaw ghetto