Swedish Spicy Lemon Cardamom Cake

Ingredients

• 1 1/2 cups flour , all purpose
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1 -2 teaspoons cardamom , best if freshly ground
• 1/4 teaspoon nutmeg , best if freshly ground
• 1/2 teaspoon cinnamon , best if freshly ground
• 6 tablespoons butter , unsalted , room temperature
• 1 cup sugar , white
• 2 eggs , large
• 1 lemon , grated zest
• 2 tablespoons lemon juice
• 1/2 cup buttermilk
• 1 cup icing sugar
• 2 tablespoons milk
• 1 lemon , juiced
• 1 tablespoon lemon zest