Hello fluterisers!
I need to play flute on and off for about 90 minutes but, after about an hour, my lips and mouth are so dry that I sound awful.
Any tips for keeping a moist embouchure?
Ta.
guinness
Delicious! However, I will be playing a particularly long mass for a bishop at 10 in the morning. Thanks, though!
Are you sure the bishop is not OK with Guinness? 
Seriously, if you keep a discreet bottle of water handy, won’t that do the trick? Wind players really do need to stay hydrated. And sneaking an occasional something like an Altoids sugar free mini-mint might help. Sticking something in your mouth that the brain perceives as food tends to keep the juices flowing. And for your lips, moisturizing well in advance with a good lip balm might help.
I find lip balm kills my embouchure when playing flute…I’m sure this is a case by case basis, but don’t do it for the first time before the blessed day.
Water bottle, tea, etc…I just try to avoid highly carbonated beverages such as sodas as nothing effects pitch as much as hiccups while playing. I speak from experience on this subject.
Eric
Yes, that’s what I was thinking.
Plus, CO2 will lower the pitch of your instrument. 
It does! It does! It’s hilarious!
I recently went to a Lunasa concert and though I have been to many before I was watching Kevin Crawford pretty closely. He drank glass after glass of what I assumed to be water during the performance. (It was crystal clear and colorless so if it wasn’t water it could only have been vodka or tequila, in which case I doubt he would have been standing.) It seemed to be a good idea and now I try to get well hydrated before I play and stay hydrated during.
There is only one problem with this idea though. If you have to play for that long you might be dancing a bit too toward the end.
Mandoboy
Motorman’s friend 
Bob
Thanks so much everyone! In the end I went with a tiny amount of vaseline, loads of water and a lot of sub-standard effort in the third octave. Also I sat behind the baby grand so no one could actually hear me above the piano - phew!
Gonna try the CO2 thing, though!