[header] How to make edible slime [title] Combine the sweetened condensed milk, sugar, and cornstarch. [step] Open a 14 ounce (396 g) can of sweetened condensed milk and spoon it into a small saucepan. Stir in 1 tablespoon (12 g) of cornstarch and 2 tablespoons (25 g) of sugar. 
[title] Stir and cook the slime for 10 to 15 minutes. [step] Turn the burner to medium-high and stir the slime constantly as it cooks.