Making edible slime is a fun project that you can do with your children. They can enjoy playing with the slime, and they can also eat it without getting exposed to anything harmful.
Pour a can of sweetened condensed milk into a saucepan
Sweetened condensed milk is very thick and sweet and typically comes in 14-ounce cans. This is sweeter and thicker than regular condensed milk; be certain to use the right product.
Stir 1 tablespoon of cornstarch into the sweetened condensed milk.
Turn on your stove to a low or medium heat, and stir constantly while the sweetened condensed milk gets warm and then thickens. This mixture burns easily, so do not leave it unattended. Once it has thickened, remove it from the heat.
Stir in food coloring
Color your slime with 10 to 15 drops of food coloring. Red and green are traditional slime colors, but do not limit yourself to those. If desired, split the slime into smaller containers in a variety of colors. Allow the slime to cool completely before giving it to your children. Be careful to test play surfaces for staining first, since the food coloring can be difficult to remove from some materials.