Making Brigadeiros is a straightforward process, but it does require some attention to detail to achieve the perfect texture. Follow these steps for mouth-watering results:

1. Prepare the Mixture:
   In a medium-sized saucepan, combine the sweetened condensed milk, cocoa powder, and butter. Stir the mixture over medium heat until the butter is melted and the cocoa powder is fully incorporated. This should take about 2-3 minutes.
2. Cook the Mixture:
   Continue to cook the mixture over medium heat, stirring constantly with a wooden spoon or silicone spatula. This prevents the mixture from sticking to the bottom of the pan and ensures even cooking. Cook for approximately 10-15 minutes until the mixture thickens and pulls away from the sides of the pan.
3. Add Flavor and Cool:
   Once the mixture is thickened, remove the pan from heat. Stir in the vanilla extract and a pinch of salt, if using. Transfer the mixture to a greased plate or shallow dish and let it cool to room temperature. This cooling step is crucial for the mixture to set properly.
4. Shape the Brigadeiros:
   Once cooled, grease your hands with a little butter or cooking spray to prevent sticking. Take small portions of the mixture and roll them into balls, about 1 inch in diameter.
5. Coat with Sprinkles:
   Pour the chocolate sprinkles onto a plate. Roll each Brigadeiro ball in the sprinkles until fully coated. Place the finished Brigadeiros in mini paper cups for an authentic touch.
6. Chill and Serve:
   Refrigerate the Brigadeiros for at least 30 minutes before serving. This helps them firm up and enhances their chewy texture.