3 tbsp. sugar
1/2 c. corn starch
2 c. cold water
Food coloring

Mix sugar and corn starch, then add water. Cook over low heat, stirring constantly until well blended. When it starts to thicken, it will thicken quickly. When it is pudding consistency, divide mixture into 4 to 5 portions; add a different food color to each and a pinch of detergent. Keeps well in refrigerator.