First, you need to make a "wort." To do this place, 2 cups water, sugar, molasses (if using), fresh ginger, and salt in a medium-sized pot and bring to a boil. Simmer for 5-7 minutes.Remove from heat and add the remaining cold water and bring it to room temperature.Add the lemon or lime juice and ginger bug.Transfer to wide-mouth mason jars for fermenting, leaving a couple inches of at the top, and secure with a FermentTools lid, air lock, both stoppers and gasket, which you can find in this single kit. If you don't have aLeave to ferment for 2-3 days in a warm place in your home. If your home is on the cool side, the fermentation process will be longer. It's ready to strain into grolsch style bottles, and transfer to the fridge, when you can see carbonation, and it tastes only mildly sweet.It will keep indefinitely in the fridge, although pressure from CO2 will continue to slowly build up in the bottle if you don't release the cap from time to time.