Fast Italian Wedding Soup | Command Cooking

Ingredients

• 1 tablespoon extra-virgin olive oil
• 4 (1/4-pound) links hot Italian sausage
• 1 cup onion, finely chopped
• 1 cup fennel, finely chopped, plus fronds, to taste, for serving
• kosher salt, to taste
• 3 cups water, plus more, to taste
• 4 cups low-sodium chicken broth
• 1 parmesan rind
• freshly ground black pepper, to taste
• 2/3 cup pastina pasta, or acini di pepe
• 3 cups escarole leaves, torn into bite-size pieces
• 2 teaspoons white wine vinegar
• parmesan cheese, to taste, shaved, for serving