open the sweetness calculator to determine how much sugar you should add. if you are using at least a 1.5 gallon container you should not have to pour any decarbonated ginger beer out for headroom.
using the value from the sweetness calculator, add sugar, seal the container again, and shake to dissolve (it's okay if it all doesn't dissolve). we added 2.75 cups of sugar when testing to make the finished booze 25% less sweet than the original ginger beer.
open your brewsy bag and pour the contents in. seal your container again and shake well.
Apply the airlock, then leave your container somewhere dark and warm (75-80°F is best) for 3 days.
after 3 days, move to the fridge for 48 hours. optional: remove the airlock and replace with the container cap, but *not* tightened onto the container. instead, leave it loosely on top.
after 48 hours in the fridge, pour the booze off the sediment that has gathered in the bottom of the bottle (best to pour into an extra empty bottle or large bowl, rinse out the original bottle, and then return booze to newly rinsed bottle).
store your booze in the fridge to keep chilled and fresh.
