Dutch Baby with Ham, Leeks, & Sharp Cheddar — Three Many Cooks

Ingredients

• 1 cup whole milk
• 4 large eggs
• ¼ teaspoon salt
• 1 cup all-purpose flour
• 2 tablespoons butter
• 1 medium leek, prepared as described below (about 1 cup)
• Generous ½ cup small-diced ham (about 3 ounces)
• ½ teaspoon dried tarragon
• 1 cup grated extra-sharp cheddar cheese