The Best Dang Candied Yams On The Planet

Name: The Best Dang Candied Yams On The Planet
Ingredients: 2.5 pounds sweet potatoes/yams; 1 stick salted butter, melted (4 ounces); 1 tablespoon real maple syrup; 1 teaspoon vanilla; 2 teaspoons cinnamon; 1/2 teaspoon nutmeg; 1/8 teaspoon ground cloves; 1 1/2 teaspoons salt; 1/2 teaspoon pepper; 1/2 cup heavy cream; 1/2 cup coconut sugar; Nut topping:; 2 cups pecan pieces; 1 egg white, beaten; 1/2 tsp salt; 1/4 teaspoon ground cumin; 1/4 teaspoon Chinese Five Spice; Pinch ground cayenne