Turns out I did save the recipe! (I tend to email them to myself since websites have gone away in the past). I always do the "self carbonation", using the flip top glass bottles (my local beer supply store had the bottles much cheaper than anywhere I could find online).
Supplies needed:
1 quart mason jar
airlock
bottles if you want it to make it bubbly
Ingredients:
3/4 tablespoons grated fresh ginger root
1/2 lemon, juiced
1/2 cup sugar
water
1/2 teaspoon active dry yeast (I've found champagne yeast/yellow packet results in a better flavor)
Instructions:
Sanitize your mason jar and Peter's Pickle fermentation kit (the fermentation kit is a style of airlock, so use any kind)
Fill the mason jar with ginger root, sugar, yeast, and lemon juice.
Pour water until nearly full. (Approximately 30oz or 0.9L)
Stir the ingredients and leave at room temperature for about 2 days.
Bonus step for carbonation: Pour the ginger ale from mason jar into a soda bottle with 1 tablespoon sugar and close the cap. Check every 12 hours until you get your desired carbonation level.
Refrigerate and enjoy!