What is carbonation? Please explain in details. Thank you :)
When people bottle beer or ginger beer at home, just before they cap the bottle, they put a half teaspoon of sugar in the liquid and then cap it with an air-tight seal. They do this to carbonate the drink.
Inside the now-sealed bottle, a further fermentation process occurs due to the residual yeast:
Now carbon dioxide is dissolved in the liquid, and the process of carbonation usually takes place over a couple of weeks.
And when (eventually) you come to open the drink, the carbon dioxide comes out of solution, i.e. you have made a sparkling drink.
Commercial soft drink and liquor manufacturers simply add carbon dioxide to carbonate the drink. Home brewers carbonate the drink chemically. The drink is now