You need 1 ingredient. The key ingredients include: ["1 recipe Savory Pie Crust, recipe follows", "2 tablespoons unsalted butter", "1 tablespoon olive oil", "1 cup thinly sliced yellow onion", "1 cup thinly sliced red onion", "1 cup thinly sliced leeks, white parts only", "6 ounces diced ham", "8 ounces thinly sliced button mushrooms", "2 teaspoons fresh thyme", "1 teaspoon minced garlic", "1 teaspoons salt, plus 1/4 teaspoon", "1/2 teaspoon fresh ground white pepper", "1/2 cup heavy cream", "6 large eggs", "1/8 teaspoon freshly ground nutmeg", "1 1/2 ounces grated Gruyere, plus 1 1/2 ounces", "1 1/4 cups all-purpose flour", "2 teaspoons Essence, recipe follows", "1/2 teaspoon salt", "4 ounces (1 stick) cold unsalted butter, cut into pieces", "3 to 4 tablespoons ice water, as needed", "2 1/2 tablespoons paprika", "2 tablespoons salt", "2 tablespoons garlic powder", "1 tablespoon black pepper", "1 tablespoon onion powder", "1 tablespoon cayenne pepper", "1 tablespoon dried oregano", "1 tablespoon dried thyme", "Recipe from ""New New Orleans Cooking".