Simple Sourdough Pizza Crust

Name: Simple Sourdough Pizza Crust
Cuisine: American
Ingredients: 375 g water (or less, see notes above); 100 g sourdough starter, active and bubbly, see notes above; 10 g salt; 500 g all-purpose or bread flour; 2 tablespoons tomato sauce; 1 to 2 oz mozzarella; handful of grated Parmigiano Reggiano (less than an ounce); drizzle olive oil; pinch sea salt; extra-virgin olive oil; a couple handfuls of baby or Tuscan kale; 1 to 2 cloves garlic; Sea salt, such as Maldon; 2 tablespoons crème fraîche; grated Parmigiano Reggiano, about 1/4 to 1/3 cup; 1/4 cup olive oil; 1/4 cup minced scallions or ramps; 1 teaspoon crushed red pepper flakes; 1 to 2 tablespoons crème fraîche; handful grated Parmigiano Reggiano; sea salt