It is nothing , the exact word is 'sulphur' or 'sulfur'.
Sulfor oxides (as SO2) are obtained.
kalburo is made of sulfor,, to make the fruit rip
a rotten egg. perhaps a fart. maybe sulfor. could it be acid rain? a failed septic system, a passing motorists catalytic converter, someone booby trapped you and hid an egg somewhere. be more specific. where are you? There is a gas leak nearby. Notify the authorties. Or you may be smelliing a meth lab. still notify the authorities.
Fruitjuice and yeast ... however most people would pin point grapes as the fruit same thing though ... make sure to ave a juice containing an ekvivalent of 5-6 kilo suger per 20-25 liter water add yeast ... let it ferment in a closed bottle with air outlet until it stops .. let it clear there are all kind of chemicals you can add .. sulfor to make it more resistent for wild fermentation... kiselgur to clear the wine etc... bottle and drink or distill it f it taste badly