Answers:
How much Burgundy? Probably close to , or, Zero. The boiling point of alcohol is lower than water. So, twenty minutes of simmering should do it. The flavor will not be artificial by this. BOB APPITITE!
Other Answers:
hardly any. the alcohol have been vaporized at boiling, hasn't it?
zero, alcohol cooks rotten fairly promptly
Ounce you cook alcohol, it doesn't have any alcohol moved out. Just the flavors
No alcohol should be gone after that amount of simmering.