How much and of which variety of red wine will best promote the beneficial properties (resveratrol) of red wine?
I believe one glass of wine = 5 ounces.
And are any of these characteristics diminished in a cheaper wine?
One glass of wine is all you need to get some benefits from wine- it is important though that it’s red Wine.
here is some good info for you:
http://www.ynhh.org/online/nutrition/advisor/red_wine.html