jim lahey’s potato pizza

INGREDIENTS

• 3 cups all-purpose flour
• 1 1/2 teaspoons salt
• 3/4 teaspoon sugar
• 1 cup cold water
• Olive oil, for bowl and pans
• 1 teaspoon instant dry yeast
• 2 potatoes, thinly sliced (about 2 cups) [I used Yukon Golds, and I believe this is what Lahey uses as well]
• 1/2 onion, diced into 1/4- to 1/2-inch pieces
• 4 tablespoons extra-virgin olive oil
• Fresh rosemary (optional)