Dear Pete, I must say that i truely enjoy your posts. It is so apparent to me that you have an incredible base of knowelage, i recall you had a birthday not long ago, 32 I think, WOW..so much insight at such a young age.
Pete, If I may expond on your deduction of riddling and dosage.
When I studied in napa valley at the school for american chefs, I had the thrill and honor to study with Tim Hanni, Tim went one to become the first ever American master of wine. This was a treat of a life time to study under his tutalige. So you made me dig up some notes from almost 12 years ago to make sure I was giving correct and relevent information. This is what I had in my notes.
Riddling: After the aging prossecc is complete, the dead yeast cells are removed through a proccess called riddling. The bottle is placed upside down in a holder at a 75 degree angle. Each day the riddler comes through the celler and turns the bottles 1/8 turn, while keeping the bottle upside down. This forces the dead yeast cells into the neck of the bottle where they are removed.
Dicourge and dosage:
The bottle is kept upside down while the neck is frozen in a ice-salt bath. This procedure results in the formation of a plug of frozen wine contianing the dead yeast cells. The cap is removed and the pressure of the carbon dioxide gas in the bottle forces the plug of frozen wine out, leaving a clear champagne. At this point the "Dosage" is done, a mixture of white wine,brandy and sugar are added to the champagne to adjust the sweetness of the wine, and to top it off. The bottle is then topped off and ready for us to enjoy.
I hope this better explians my point.
cc