1 pound fresh, young fava beans
1 large cut in half
1 medium yellow onion (cut in half, then sliced 1/4-inch thick)
1/3 cup extra-virgin olive oil
1/3 cup red wine vinegar (preferably cabernet or zinfandel)
1 teaspoon salt
1/4 teaspoon freshly ground pepper
1 teaspoon Sugar
1/2 cup hot water
6 sprigs of fresh dill
2 tablespoons minced fresh dill