Make the Most of Cherry Season With This Black Forest Cake

Name: Make the Most of Cherry Season With This Black Forest Cake
Ingredients: 1 (12-ounce) package frozen pitted sweet dark cherries , chopped (about 2 1/4 cups ); 3/4 cup granulated sugar; 2 1/2 tablespoons cornstarch; 1/4 teaspoon grated lemon zest plus 2 tablespoons fresh juice (from 1 lemon); 1 tablespoon unsalted butter , cubed; 1 tablespoon kirsch or maraschino liqueur (such as Luxardo); Baking spray with flour; 2/3 cup all-purpose flour; 1/2 cup Dutch-process cocoa; 3/4 teaspoon kosher salt; 6 large eggs; 1 1/4 cups granulated sugar; 1/2 cup (4 ounces) unsalted butter , melted and cooled; 2 tablespoons kirsch or maraschino liqueur (such as Luxardo); 2 cups heavy whipping cream; 1/4 cup powdered sugar; 2 teaspoons kirsch or maraschino liqueur (such as Luxardo); 3 1/2 ounces (70% cacao) bittersweet dark chocolate bar (such as Lindt), melted, plus more for shaving; 2 cups (10 ounces) fresh dark sweet cherries , pitted and halved, plus whole cherries for garnish