A lot of people make fun of mixing cola and red wine -- often the very same people who combine Coke and whisky or who put sugar and milk in their tea -- but this is a common drink, especially in Spain.
Today known in Spain as Kalimotxo (Calimocho), this century-old drink is simple: add one part cola to one part wine -- a bottle of each will do -- then rock gently with ice and serve.
You can garnish with a few orange or lime wedges. You can also add your own twists, like a touch of vanilla syrup or coffee liqueur, though the original recipe works just fine. Try an inexpensive wine such as Chamanto Cabernet Sauvignon from Chile.