"Elmers" Glue

1 quart skim milk
3/4 tablespoon baking soda
1 tablespoon white vinegar
10 ounces water

Place milk and vinegar in a double boiler. Cook on low heat and stir as curds form. Drain off liquid. Wash remaining mass with water until the vinegar smell is gone. Put into a clean bowl. Dissolve baking soda in water. Pour over curds and stir until a white paste forms. Seal in suitable containers.