Mom's chocolate pudding

Ingredients:

• 2.5 cups whole milk
• 0.5 cup granulated sugar
• 1/3 cup cocoa powder
• 2 tablespoons cornstarch
• 110 g semi-sweet chocolate, chopped, plus extra for garnish
• 2 tsp vanilla extract
• 2 tablespoons unsalted butter
• 1 cup whipping cream
• 1/4 cup powdered sugar

Preparation:

1. Combine the milk, granulated sugar, cocoa, and cornstarch in a non-reactive saucepan over medium-high heat until the cocoa is completely dissolved and the mixture begins to simmer, about 8 minutes. Reduce the heat to medium and continue to cook, stirring, until the mixture thickens to the consistency of a light sauce, another 6 to 7 minutes.
2. Add the chopped chocolate, vanilla extract, and a pinch of salt and continue cooking, stirring, until the chocolate has melted and the pudding is thick and creamy, about 2 more minutes. Remove the pudding from the heat, add the butter, and stir until the butter has melted.
3. Divide the chocolate pudding evenly among six ramekins or glasses, each holding 180-240 ml. Cover with plastic wrap and refrigerate for 4 hours or overnight until completely cool and set.
4. To serve, pour the cream into a chilled medium bowl and add the powdered sugar. Whip the cream with a whisk or mixer until soft peaks form, about 2-3 minutes. Top each serving of pudding with a dollop of whipped cream and sprinkle with grated chocolate, if using.