1 cup flour
2 tbsp salt
1 1/4 cup hot water
1 1/2 cup cold water
Food coloring or tempera paint

Directions:

Put flour and salt in a saucepan and add cold water. Beat with a whisk or rotary beater until smooth. Add hot water and boil until mixture is thick. Beat until smooth. Keep in refrigerator and add food coloring as needed.