Chai Cake

Name: Chai Cake
Prep time: 45 min
Cook time: 30 min
Total time: 1 h 15 min
Cuisine: American, Indian
Ingredients: ¾ cup (180g) milk (any kind, any fat content); 2 chai tea bags; 1 and ½ cups (180g) all-purpose flour; ¾ cup (112g) ground flaxseed*; 2 teaspoons baking powder; 1 teaspoon salt; 1 and ½ teaspoons ground cinnamon; 1 teaspoon ground ginger; ¼ teaspoon ground cardamom; ½ teaspoon baking soda; ½ cup (113g) unsalted butter (melted and allowed to cool); ¾ cup (150g) granulated sugar; 2 large eggs (room temperature); ¼ cup (62g) plain yogurt or sour cream (any fat content, room temperature); 2 teaspoons vanilla extract; 4 ounces (112g) full fat cream cheese (softened to room temperature); ¼ cup (57g) unsalted butter (softened to room temperature); 3 cups (360g) powdered sugar; 1 teaspoon ground cinnamon; ½ teaspoon ground ginger; ⅛ teaspoon ground cardamom; 1 to 2 Tablespoons (15-30g) milk or cream (any)