Butterbeer

Directions

1. 1
   In a small saucepan, combine brown sugar with 2 tablespoons water.
2. 2
   Bring to a boil over medium heat and cook until the mixture reaches 240 degrees F (115 degrees C) on a candy thermometer, stirring occasionally.
3. 3
   If you don't have a candy thermometer, bring to a gentle boil and turn off the heat after about a minute of cooking.
4. 4
   Turn off the heat and add the butter, salt, vinegar, and 1/4 cup heavy cream.
5. 5
   Stir until smooth.
6. 6
   Cool mixture to room temperature before using.
7. 7
   In a medium bowl, beat together the remaining cream (1/2 cup) with 2 tablespoons of the brown sugar syrup.
8. 8
   In each glass, mix together 1/4 cup brown sugar syrup with 1/4 cup cream soda.
9. 9
   Pour in the rest of the cream soda until it is nearly to the brim of the glass.
10. 10
    Top with whipped cream.
11. 11
    Serve immediately!