As with any traditional fermented drink, this is more of an art than a science. The outcome depends greatly on the strength of your culture, the temperature, and the sugar used. The final mixture should smell of ginger and slightly of yeast/fermentation and should be fizzy. Watch carefully that it doesn’t become too carbonated as this will cause too much pressure and may result in an exploding jar!
The mixture can be strained and transferred to Grolsch style bottles before putting in the refrigerator.