Swiss chard is a beloved kitchen-garden vegetable in Italian cuisine.
Drain lightly and chop the leaves coarsely. Bring water to a boil in a large pot. Add the onions and garlic and saute over medium heat until the onion is golden, about 5 minutes. Add the wine or water and the chard. Cover and cook just until the chard wilts down, stirring once or twice, about 3 minutes.