Episode 8: Root Beer
This is one of the easiest things I've ever made.
You can order the root beer extract online at Zatarain's.
Put the funnel on the soda bottle, and pour in the sugar, then the yeast. Swirl to combine. Add the root beer extract, then fill the bottle about halfway with water. Cap the bottle and mix thoroughly, until all the sugar at the bottom is incorporated. Fill the bottle almost to the top, leaving about an inch to spare.
Put the bottle in a relatively cool place out of direct sunlight for a couple of days. Then squeeze the bottle every day. Once the sides are hard, put it in the fridge. It's ready!