Yoghurt is, simply, one product of spoiled milk. It was probably more accurately 'discovered' than 'invented', with the discovery leading to further development of fermentation techniques. Yoghurt is known to have been produced as long ago as 5,400 years, and was used as a cleaning agent!
If you plan to eat the yoghurt, less than 12 hours. If you don't plan to eat the yoghurt, indefinately.
how long has deforestation been around
As long as guns have been around.
how long has the london eye been around for
As long as So Random has been around.
Yes vaalia yoghurt is gluten free, go to http://www.vaalia.com.au/yoghurt/children/my-first-yoghurt/
Yoghurt means 'Dahi'.
They have always been around
boner
234 years fool
how long have boxing been around?