I just got into this fermenting business. Last week I successfully made some ginger ale with my own ginger bug. This week I tried again. I made some ginger syrup and mixd up 4 bottles of mineral water, all with more or less the same quantities of syrup and half a lime and gingerbug. Only one bottle went fizzy however, the rest just don't seem to do anything. I tried to make a new ginger bug by putting some of the old stuff with fresh ginger, water and sugar and it went fizzy within a few hours, so I put some of that stuff in the unfermented bottles but nothing.
I don't get why 1 bottle did ferment and the rest just refuse to do anything, they all just stay very sweet and fleet. I did use another type of sugar for the 2nd batch (dutch type basterd sugar,ie white sugar/inversugar mixture, for the first and regular whit for the second) but that doesn't explain why one bottle did ferment....