Please note with the Tonic water the amount of sugar you add is very important, the formulation calls for 1.35Kg +/- 100g, come back 100g and its got plenty of bite add an extra 100 g and it mellows, maybe a bit too much.
First couple of days it tasted intensely of Quinine, as the carbonation balanced it settled in very nicely.
Similarly with the Cola and the 2Kg of sugar called for, under carbed it’s a bit sweet but mellows very nicely after a day or two.
It is good to be able to play around with the sweetness a bit to get exactly the flavour you are looking for.