Ingredients (for six servings):
First layer:
6 tablespoons of Hershey's syrup
 
Chocolate Mousse:
2 containers (500 ml) whipping cream
3 tablespoons confectioner's sugar
¼ cup Hershey's chocolate syrup
4 tablespoons of chocolate cookie crumbs
100 gr. grated bittersweet chocolate
 
Topping:
½ container (60 ml) whipping cream
100 gr. bittersweet chocolate
2 tablespoons of Hershey's concentrate 
 
Garnishing: Berries
 
Directions:
  1. Whip the cream and confectioner's sugar until firm. Add the syrup and cookie crumbs and gently fold until the mousse is of a uniform consistency. Transfer the mousse into a pastry bag.
  2. To put together the serving: Pour one tablespoon of Hershey's syrup into each jar. Pour in the chocolate mousse and transfer to freezer for one hour.
  3. Melt the cream and chocolate in a microwave oven and mix until cream is smooth. Add the syrup, mix until cream is of uniform consistency and chill. Pour the cream onto the mousse in the jars, garnish with berries and serve.