This root beer cake recipe has good old-fashioned flavor.

1. Preheat the oven to 350 degrees F (175 degrees C). Grease and flour a 10-inch Bundt pan.

2. Make cake: Stir together cake mix, root beer, eggs, and oil in a large bowl until smooth. Pour batter into the prepared pan.

3. Bake in the preheated oven until a toothpick inserted into the center of cake comes out clean, 35 to 40 minutes. Allow cake to cool in the pan for 15 minutes before inverting onto a wire rack to cool completely.

4. Make glaze: Whisk together confectioners’ sugar and root beer in a small bowl until smooth.

5. Use a skewer to poke holes in cooled cake at 2 inch intervals. Pour glaze evenly over cake.

   

https://www.allrecipes.com/recipe/17838/root-beer-float-cake-i/