Apple Cider Donuts

Name: Apple Cider Donuts
Prep time: 1 h
Cook time: 12 min
Total time: 1 h 12 min
Cuisine: American
Ingredients: Nonstick spray, for greasing tin; 480 milliliters (2 cups) apple cider, reduced to 80 milliliters (1/3 cup); 225 grams all purpose flour (1 3/4 cups); 1 teaspoon baking powder; 3/4 teaspoon baking soda; 1 teaspoon ground cinnamon; 1/8 teaspoon fine sea salt; Pinch ground allspice; Pinch ground nutmeg; 150 grams dark brown sugar (3/4 cup); 50 grams granulated sugar (1/4 cup); 120 milliliters whole milk (1/2 cup); 30 milliliters canola oil or vegetable oil (2 tablespoons); 1 large egg, at room temperature; 1 teaspoon vanilla bean paste; 200 grams granulated sugar (1 cup); 1/4 teaspoon ground nutmeg; 1/4 teaspoon ground ginger; 1/4 teaspoon ground allspice; 1/4 teaspoon ground cardamom; 60 grams unsalted butter (1/4 cup; 1/2 stick), melted