I started by looking up a bunch of recipes to get the general idea and then took pieces of different ones to experiment on my own.
Step 2: Using a 2:1 ratio (2 parts sugar or Splenda to 1 part water) and 2 Tbsp ginger, simmer until the sugar is melted, then cover and let steep for one hour.
Step 3: Strain the cooked mixed through a fine mesh strainer to remove all the pulp.
Step 4: In a 2 liter bottle, combine strained mixture, 1/8 Tsp active dry yeast and 2 Tbsp of Lemon Juice and top with water, leaving an inch and a half or so at the top. Close tightly and shake.
Step 5: Store bottle in cupboard for 48 hours at room temperature. Open cap and check level of carbonation a few times during this period. Once desired level is reached, immediately place bottle in fridge to halt process. Will remain fresh in fridge up to 2 weeks.
I put the date on the bottle and marked it "Sugar" because we are experimenting with both sugar (Bottle #1) and Splenda (Bottle #2).
Sometime Saturday evening, we should be having a taste test! Can't wait!
11/26 Update - straight Splenda doesn't work. Next step will be a few tablespoons of sugar to feed the yeast, but Splenda for sweetener.
For bottle #3 I increased the yeast to 1/4 tsp and we are trying another method of combining all ingredients in the bottle and then if we don't like "pulp" we'll strain as we pour. In 2 days we'll know how it turns out.