The missing recipe

The year is 1880, Schlumberger founder Robert Alwin Schlumberger died a year ago and now a catastrophe is on it's way: The supply of Schlumberger Sparkling Brut Klassik has almost run out and the secret recipe for the sparkling wine is untraceable. Before his death, Robert Alwin Schlumberger hid the formula in his office so that it would not fall into wrong hands. Help us and try to find the secret formula. But beware, you only have 60 minutes before production stops.