Jeff asked a couple of days ago about the Spanish recipe for sangria. I checked down at the local bar on the plaza, and they told me they use, for 1 1/2 liters, over a pitcher of ice:
1 €4-5 bottle of red wine (not the wine-in-a-box stuff)
1 shot Cointreau
Vodka, usually plenty since it's mostly the tourists who order it
The bar guy says the authentic old-time sangría recipe was used out in the country to sweeten up bad, hometown, cheap wine. They'd take a couple of liters, cut up a bunch of fruit (oranges, apples, pears, peaches, whatever), and let it sit for a few days until the wine had absorbed the flavor of the fruit and was more drinkable.
My wimpy wine-cooler sangría formula is 1/3 cheap rosé wine, 1/3 orange juice, and 1/3 Fanta lemon or Sprite. Even your grandma will drink this stuff.