Sangria is a very tipycal spanish drink based in the mix of wine and fruits which results in a delicious drink always served very cold. Though the low wine graduation can confuse someone it is important to stress about sangria heavy effects due to the fact taste is really refreshing - thus you drink more - and the adding of sugar that strenghs the effects of alcohol.
There are hundreds of recipes of sangria. Some include high graduation liquors and even cinnamon. The next one is the classical one.
1 liter of red wine (around 2 pints or 1 bottle) of good quality
two oranges (the ones used to get juice)
The wine and the juice of the two oranges are mixed in a jar. The peaches are cut in dices and placed inside the jar. We taste the mixture and we add sugar until obtaining the sweetness that pleases to us. If we have problems in dissolving the sugar we can use a liquid sweetener. We keep in the refrigerator at least during six hours before to drink so we maintain the maceration and wine is therefore flavored of naturally with the fruits.
By the way, the word 'Sangria' means 'related with blood' cause in ancient times they were thinking wine and specially sangria helped to produce the blood of the human body.