Satisfyingly Gooey Shoofly Pie Recipe

Name: Satisfyingly Gooey Shoofly Pie Recipe
Ingredients: 1 pie crust, homemade or store-bought; 192g all-purpose flour (6 3/4 ounces; 1 1/2 cups); 150g dark brown sugar (5 1/4 ounces; 3/4 cup); 1/2 teaspoon ground cinnamon; 1/4 teaspoon ground nutmeg; 1/4 teaspoon ground ginger; 1/4 teaspoon ground cloves; 1/8 teaspoon Diamond Crystal kosher salt; for table salt, use a pinch; 50g vegetable shortening (1 3/4 ounces; 1/4 cup); 3/4 teaspoon baking soda; 2/3 cup (160ml) hot water, about 115°F or 46°C; 220g molasses (7 3/4 ounces; 2/3 cup); 1 large egg yolk, at room temperature