Calzone With Sausage, Greens And Ricotta

Ingredients

• 1 cup ricotta cheese
• 3/4 pound Italian sausage (bulk or removed from casing)
• 2 tablespoons extra-virgin olive oil
• 1 garlic clove
• 6 cups young, tender greens, such as beet greens, Swiss chard, escarole or radicchio
• large pinch of red chile flakes
• 1 tablespoon balsamic vinegar
• 1/2 cup grated Parmigiano-Reggiano cheese
• kosher salt
• 2 teaspoons active dry yeast
• 1 cup warm (110ºF) water
• 3 cups unbleached bread flour
• 3/4 teaspoon kosher salt
• 3 tablespoons extra-virgin olive oil, plus more for the bowl