Polk A Dot Mushroom Belgian Chocolate, 4 Grams. Enjoy our PolkaDot Milk Belgian Chocolate Bar, which is currently available for sale. It is a rich, creamy, and delicious dessert, which was made using the best ingredients, and is sure to sate your sweet taste. The inclusion of probiotics in our PolkaDot Milk Belgian Chocolate Bar is one of its distinctive qualities. These live bacterial cultures can maintain a healthy gut, which in turn can enhance the function of the immune system as a whole.