Either way, you can make a rich, flavorful glaze by repurposing the leftover root beer. Just simmer it with 1 cup of beef stock, a couple dashes of Worcestershire sauce, and reduce on the stove.

How to Make Root Beer Float Poke Cake Start by preheating your oven to 350 degrees F . Mix your cake batter by combining the cake mix, 1¼ cups root beer , vegetable oil, and eggs in a large bowl.