2 cups milk
1/4 cup sugar
3 tbsp cornstarch (or custard powder)
1 tsp vanilla extract
Add milk, sugar, and cornstarch into saucepan. Beat until smooth then heat on medium while stirring constantly to make it thick. Once thick, turn off heat and stir in vanilla.
Divide mixture into different portions, color with cocoa powder or food color. Layer it in glasses. Chill between layers to make it firm.
Give a final touch with crushed cookies, fruits, or whipped cream topping.
Serve it chilled and admire the taste.