How to Make Butterbeer: Butter Beer Recipe for Harry Potter and the Deathly Hallows: Part 2

All the movies teams lol
Harry potter movies: Team Harry or team Ron?
Twillight Movies: Team Edward or team Jacob?
The Hunger games Movies: Team Peeta or Team Gale?
WHOOP WHOOOOPIE

Yes!  I would like to have this recipe too!

How to make ButterBeer

Ingredients:
3/4 cup of Brown Sugar
2 Tablespoons of Water
5 Tablespoons of Softened Butter
1 Tablespoon of Fresh Lemon Juice
1/2 a Teaspoon of Salt
1 Tablespoon of Vanilla Extract
1 Liter of Seltzer Water
1 Bottle of Burbon

Stir together 3/4 cup of Brown Sugar with 2 tablespoons of water in a sauce pan on medium high heat. Stir to keep from burning. Keep a cup of water near by to keep the spatula from sticking to any surfaces. Warm brown sugar to 240 degrees farenheit. In a separate bowl combine 5 tablespoons of slightly softened butter, 1 tablespoon of fresh lemon juice, half a teaspoon of salt and 1 tablespoon of vanilla extract. When the brown sugar and water mixture is the right temperature remove it from the heat and stir it into the butter mixture. Stir in 1/4 cup heavy cream and let cool slightly.1 liter of seltzer water.
Pour 2 or 3 tablespoons of the butterbeer syrup into a mug and top with the seltzer water and stir. For adults add a shot of Burbon.

How many glasses would you say this makes?  I'm planning a party for a large group and it would be very helpful for shopping lists!  :)  This is brilliant, and I love the idea of adding burbon just for the grown ups.  :)