Magret Duck Breast

Name: Magret Duck Breast
Ingredients: 1 whole magret duck breast, trimmed of 90 percent of the fat; 1 tablespoon garam masala; 2 teaspoons five-spice powder; 2 tablespoons salt; 1 bunch red seedless grapes, removed from stems; 2 cups zinfandel red wine; 2 cups demi-glace; Salt and freshly ground black pepper; 1 pound all-purpose flour; 11/2 teaspoons salt; 1 teaspoon white pepper; 1 teaspoon ground nutmeg; 7 eggs; 2 egg yolks; 1/3 cup milk; 3 tablespoons melted butter, plus more for sauteing